diff --git a/examples/convexhull.rb b/examples/convexhull.rb
index 23d9afa..b02a3d1 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 defe1dd..2770db3 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 c228a4e..db522c7 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 d0979ac..ddd95ce 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 8260205..91cd28d 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 4c35776..0064670 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