diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 9e1fe49e01..c5c361c6d8 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -69,7 +69,7 @@ jobs:
           sudo apt-get -y install cppcheck
           sudo cpan Path::Class
           cppcheck --template=gcc --inline-suppr --std=c++17 --enable=style,unusedFunction -i externals \
-                   -DCPPCHECK --force --suppressions-list=cppcheck.supp \
+                   -i src/plugins/weatherdata/gfs/g2clib -DCPPCHECK --force --suppressions-list=cppcheck.supp \
                    --library=qt.cfg --library=posix.cfg . 2> >(tee error.log >&2)
           perl scripts/warnings.pl error.log
 
diff --git a/cppcheck.supp b/cppcheck.supp
index 605c0ea1e3..30a261dfca 100644
--- a/cppcheck.supp
+++ b/cppcheck.supp
@@ -18,13 +18,6 @@ useStlAlgorithm
 // Internal errors
 cppcheckError
 
-// g2clib
-variableScope:src/plugins/weatherdata/gfs/g2clib/*.c
-knownConditionTrueFalse:src/plugins/weatherdata/gfs/g2clib/*.c
-redundantAssignment:src/plugins/weatherdata/gfs/g2clib/*.c
-unreadVariable:src/plugins/weatherdata/gfs/g2clib/*.c
-invalidFunctionArg:src/plugins/weatherdata/gfs/g2clib/*.c
-
 // Ignore unusedFunction as it has too many false positives (especially in tests)
 unusedFunction