diff --git a/examples/convexhull.rb b/examples/convexhull.rb
index 23d9afa9..b02a3d16 100755
--- a/examples/convexhull.rb
+++ b/examples/convexhull.rb
@@ -1,6 +1,6 @@
 #!/usr/bin/env ruby
 # convexhull.rb
-gem "opencv"
+require "rubygems"
 require "opencv"
 require "pp"
 include OpenCV
diff --git a/examples/face_detect.rb b/examples/face_detect.rb
index defe1dd6..2770db38 100755
--- a/examples/face_detect.rb
+++ b/examples/face_detect.rb
@@ -1,7 +1,6 @@
 #!/usr/bin/env ruby
 # face_detect.rb
 require "rubygems"
-gem "opencv"
 require "opencv"
 
 include OpenCV
diff --git a/examples/houghcircle.rb b/examples/houghcircle.rb
index c228a4e0..db522c73 100755
--- a/examples/houghcircle.rb
+++ b/examples/houghcircle.rb
@@ -1,7 +1,6 @@
 #!/usr/bin/env ruby
 # houghcircle.rb
 require "rubygems"
-gem "opencv"
 require "opencv"
 include OpenCV
 
diff --git a/examples/inpaint.rb b/examples/inpaint.rb
index d0979ac4..ddd95ce1 100755
--- a/examples/inpaint.rb
+++ b/examples/inpaint.rb
@@ -1,7 +1,6 @@
 #!/usr/bin/env ruby
 # inpaint.rb
 require "rubygems"
-gem "opencv"
 require "opencv"
 
 include OpenCV
diff --git a/examples/paint.rb b/examples/paint.rb
index 82602051..91cd28da 100755
--- a/examples/paint.rb
+++ b/examples/paint.rb
@@ -1,7 +1,6 @@
 #!/usr/bin/env ruby
 # paint.rb
 require "rubygems"
-gem "opencv"
 require "opencv"
 
 include OpenCV
diff --git a/examples/snake.rb b/examples/snake.rb
index 4c357768..0064670b 100755
--- a/examples/snake.rb
+++ b/examples/snake.rb
@@ -1,7 +1,6 @@
 #!/usr/bin/env ruby
 # snake.rb
 require "rubygems"
-gem "opencv"
 require "opencv"
 include OpenCV