diff --git a/contribs/gmf/apps/desktop_alt/sass/desktop_alt.scss b/contribs/gmf/apps/desktop_alt/sass/desktop_alt.scss
index efa88cb9b8a7..da13cd6c5add 100644
--- a/contribs/gmf/apps/desktop_alt/sass/desktop_alt.scss
+++ b/contribs/gmf/apps/desktop_alt/sass/desktop_alt.scss
@@ -23,7 +23,7 @@
 
 @import './vars_desktop_alt.scss';
 @import 'gmf/controllers/desktop.scss';
-@import '~mapillary-js';
+@import 'mapillary-js';
 
 html {
   body {
diff --git a/src/contextualdata/contextualdata.scss b/src/contextualdata/contextualdata.scss
index b9e02cf1b31f..6f241f30151f 100644
--- a/src/contextualdata/contextualdata.scss
+++ b/src/contextualdata/contextualdata.scss
@@ -21,7 +21,7 @@
  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
 
-@import '~gmf/sass/vars.scss';
+@import 'gmf/sass/vars.scss';
 
 .popover.gmf-contextualdata {
   width: 25rem;
diff --git a/src/controllers/desktop.scss b/src/controllers/desktop.scss
index 13720f9868ff..f1706269a150 100644
--- a/src/controllers/desktop.scss
+++ b/src/controllers/desktop.scss
@@ -27,10 +27,10 @@
 
 @import './vars_desktop.scss';
 
-@import '~ol/ol.css';
+@import 'ol/ol.css';
 @import 'gmf/css/reset.css';
 @import 'gmf/sass/gmf-font.scss';
-@import '~bootstrap/scss/bootstrap.scss';
+@import 'bootstrap/scss/bootstrap.scss';
 @import 'gmf/sass/base.scss';
 @import 'gmf/sass/map.scss';
 @import 'gmf/sass/input-range.scss';
diff --git a/src/controllers/mobile.scss b/src/controllers/mobile.scss
index 6844368b8244..5000e7652342 100644
--- a/src/controllers/mobile.scss
+++ b/src/controllers/mobile.scss
@@ -27,10 +27,10 @@
 
 @import './vars_mobile.scss';
 
-@import '~ol/ol.css';
+@import 'ol/ol.css';
 @import 'gmf/css/reset.css';
 @import 'gmf/sass/gmf-font.scss';
-@import '~bootstrap/scss/bootstrap.scss';
+@import 'bootstrap/scss/bootstrap.scss';
 @import 'gmf/sass/base.scss';
 @import 'gmf/sass/map.scss';
 @import 'gmf/sass/input-range.scss';
diff --git a/src/dropfile/dropfile.scss b/src/dropfile/dropfile.scss
index ed4c8e264f84..b0fa5c467d22 100644
--- a/src/dropfile/dropfile.scss
+++ b/src/dropfile/dropfile.scss
@@ -21,7 +21,7 @@
  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
 
-@import '~gmf/sass/vars_only.scss';
+@import 'gmf/sass/vars_only.scss';
 
 $bgselector-image-size: 3rem;
 .gmf-file-alert-contained {
diff --git a/src/floor/floor.scss b/src/floor/floor.scss
index 7d26e4f229dc..1ac823624a31 100644
--- a/src/floor/floor.scss
+++ b/src/floor/floor.scss
@@ -21,7 +21,7 @@
  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
 
-@import '~gmf/sass/vars_only.scss';
+@import 'gmf/sass/vars_only.scss';
 
 gmf-floorselector.gmf-floorselector {
   overflow: hidden;
diff --git a/src/import/import.scss b/src/import/import.scss
index 47d5b2b56df2..565c6551e456 100644
--- a/src/import/import.scss
+++ b/src/import/import.scss
@@ -21,8 +21,8 @@
  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
 
-@import '~gmf/sass/vars.scss';
-@import '~gmf/sass/typeahead.scss';
+@import 'gmf/sass/vars.scss';
+@import 'gmf/sass/typeahead.scss';
 
 gmf-importdatasource {
   .gmf-importdatasource-url-form-group {
diff --git a/src/layertree/common.scss b/src/layertree/common.scss
index 19c913f65680..a9b46f68e433 100644
--- a/src/layertree/common.scss
+++ b/src/layertree/common.scss
@@ -21,7 +21,7 @@
  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
 
-@import '~gmf/sass/vars_only.scss';
+@import 'gmf/sass/vars_only.scss';
 @import '@fortawesome/fontawesome-free/scss/variables.scss';
 
 .gmf-layertree-root-tools {
diff --git a/src/layertree/timeslider.scss b/src/layertree/timeslider.scss
index a8c631000100..fa8b1064d8c8 100644
--- a/src/layertree/timeslider.scss
+++ b/src/layertree/timeslider.scss
@@ -21,8 +21,8 @@
  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
 
-@import '~gmf/sass/vars.scss';
-@import '~gmf/sass/input-range.scss';
+@import 'gmf/sass/vars.scss';
+@import 'gmf/sass/input-range.scss';
 
 .gmf-time-slider {
   // 1.75rem come from bootstrap popover class .popover-content { padding: 0.56rem 0.87rem; }
diff --git a/src/permalink/share.scss b/src/permalink/share.scss
index 8029715deb67..b65ed9853a61 100644
--- a/src/permalink/share.scss
+++ b/src/permalink/share.scss
@@ -21,7 +21,7 @@
  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
 
-@import '~gmf/sass/vars.scss';
+@import 'gmf/sass/vars.scss';
 
 gmf-share {
   .modal-body {
diff --git a/src/profile/profile.scss b/src/profile/profile.scss
index 5118ce43ed6f..06898e9a4989 100644
--- a/src/profile/profile.scss
+++ b/src/profile/profile.scss
@@ -21,7 +21,7 @@
  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
 
-@import '~gmf/sass/vars_only.scss';
+@import 'gmf/sass/vars_only.scss';
 
 $profile-height: 12.5rem;
 .panel.gmf-profile-container {
diff --git a/src/query/grid.scss b/src/query/grid.scss
index 68ca281cc1dd..866dcd2ed7f7 100644
--- a/src/query/grid.scss
+++ b/src/query/grid.scss
@@ -21,7 +21,7 @@
  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
 
-@import '~gmf/sass/vars.scss';
+@import 'gmf/sass/vars.scss';
 
 $table-height: $displayquerygrid-height - $app-margin - 2 * $map-tools-size;
 
diff --git a/src/query/window.scss b/src/query/window.scss
index 2977b34259d1..53d9758b5a3a 100644
--- a/src/query/window.scss
+++ b/src/query/window.scss
@@ -21,7 +21,7 @@
  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
 
-@import '~gmf/sass/vars.scss';
+@import 'gmf/sass/vars.scss';
 
 $displayquerywindow-tablet-width: calc(9 * $map-tools-size);
 $displayquerywindow-detailed-header-height: 3.12rem;
diff --git a/src/sass/components.scss b/src/sass/components.scss
index f8a43188c97f..524300e67482 100644
--- a/src/sass/components.scss
+++ b/src/sass/components.scss
@@ -13,4 +13,4 @@
 @import 'ngeo/query/window.scss';
 @import 'ngeo/editing/editing.css';
 @import 'ngeo/sass/jquery-ui.scss';
-@import '~jquery-datetimepicker/jquery.datetimepicker.css';
+@import 'jquery-datetimepicker/jquery.datetimepicker.css';
diff --git a/src/sass/font.scss b/src/sass/font.scss
index db5f72f93e90..8cc3668ff290 100644
--- a/src/sass/font.scss
+++ b/src/sass/font.scss
@@ -22,6 +22,6 @@
  */
 
 $fa-font-path: '~@fortawesome/fontawesome-free/webfonts';
-@import '~@fortawesome/fontawesome-free/scss/fontawesome.scss';
-@import '~@fortawesome/fontawesome-free/scss/regular.scss';
-@import '~@fortawesome/fontawesome-free/scss/solid.scss';
+@import '@fortawesome/fontawesome-free/scss/fontawesome.scss';
+@import '@fortawesome/fontawesome-free/scss/regular.scss';
+@import '@fortawesome/fontawesome-free/scss/solid.scss';
diff --git a/src/sass/iphone.scss b/src/sass/iphone.scss
index 092bd298629d..b02a63429c11 100644
--- a/src/sass/iphone.scss
+++ b/src/sass/iphone.scss
@@ -21,7 +21,7 @@
  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
 
-@import '~gmf/sass/vars.scss';
+@import 'gmf/sass/vars.scss';
 
 // Hack for ios Safari browser (UI overlapping on iOS 10)
 @media all and (orientation: landscape) {
diff --git a/src/sass/jquery-ui.scss b/src/sass/jquery-ui.scss
index 1803de16c156..1117ddf16db5 100644
--- a/src/sass/jquery-ui.scss
+++ b/src/sass/jquery-ui.scss
@@ -21,23 +21,23 @@
  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
 
-@import '~jquery-ui/themes/base/core.css';
+@import 'jquery-ui/themes/base/core.css';
 // @import "~jquery-ui/themes/base/accordion.css";
 // @import "~jquery-ui/themes/base/autocomplete.css";
 // @import "~jquery-ui/themes/base/button.css";
 // @import "~jquery-ui/themes/base/checkboxradio.css";
 // @import "~jquery-ui/themes/base/controlgroup.css";
-@import '~jquery-ui/themes/base/datepicker.css';
+@import 'jquery-ui/themes/base/datepicker.css';
 // @import "~jquery-ui/themes/base/dialog.css";
-@import '~jquery-ui/themes/base/draggable.css';
+@import 'jquery-ui/themes/base/draggable.css';
 // @import "~jquery-ui/themes/base/menu.css";
 // @import "~jquery-ui/themes/base/progressbar.css";
-@import '~jquery-ui/themes/base/resizable.css';
+@import 'jquery-ui/themes/base/resizable.css';
 // @import "~jquery-ui/themes/base/selectable.css";
 // @import "~jquery-ui/themes/base/selectmenu.css";
 // @import "~jquery-ui/themes/base/sortable.css";
-@import '~jquery-ui/themes/base/slider.css';
+@import 'jquery-ui/themes/base/slider.css';
 // @import "~jquery-ui/themes/base/spinner.css";
 // @import "~jquery-ui/themes/base/tabs.css";
 // @import "~jquery-ui/themes/base/tooltip.css";
-@import '~jquery-ui/themes/base/theme.css';
+@import 'jquery-ui/themes/base/theme.css';
diff --git a/src/sass/vars.scss b/src/sass/vars.scss
index 17f5c02ba638..5889f34a4cb2 100644
--- a/src/sass/vars.scss
+++ b/src/sass/vars.scss
@@ -23,9 +23,9 @@
 
 @import 'gmf/sass/vars_only.scss';
 
-@import '~bootstrap/scss/_functions.scss';
-@import '~bootstrap/scss/_variables.scss';
-@import '~@fortawesome/fontawesome-free/scss/_variables.scss';
+@import 'bootstrap/scss/_functions.scss';
+@import 'bootstrap/scss/_variables.scss';
+@import '@fortawesome/fontawesome-free/scss/_variables.scss';
 
 $table-border-color: $border-color !default;
 
diff --git a/src/spinner/loader.scss b/src/spinner/loader.scss
index 7d6ea9c9d545..2cc5e215ad79 100644
--- a/src/spinner/loader.scss
+++ b/src/spinner/loader.scss
@@ -21,7 +21,7 @@
  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
 
-@import '~gmf/sass/vars.scss';
+@import 'gmf/sass/vars.scss';
 
 .request-spinner {
   z-index: $above-all;