diff --git a/build/pack-examples.sh b/build/pack-examples.sh
index 07592c0..51a5f56 100644
--- a/build/pack-examples.sh
+++ b/build/pack-examples.sh
@@ -56,15 +56,16 @@ url="https://github.com/libsdl-org/SDL_ttf/releases/download/release-${ver}"
 	rm -rf /tmp/SDL2_ttf-${ver}
 }
 
-
-[ -r ${glew} ] || {
-	wget "https://github.com/nigels-com/glew/releases/download/glew-2.2.0/glew-2.2.0-win32.zip"
+ver=2.2.0
+url="https://github.com/nigels-com/glew/releases/download/glew-${ver}/glew-${ver}-win32.zip"
+[ -r glew-${ver}-win32.zip ] || {
+	wget {$url}
 }
 [ -r cjit-demo/glew32.dll ] || {
-	unzip -q -d /tmp glew-2.2.0-win32.zip
-	mv /tmp/glew-2.2.0/bin/Release/x64/glew32.dll cjit-demo/
-	mv /tmp/glew-2.2.0/include/GL cjit-demo/
-	rm -rf /tmp/glew-2.2.0
+	unzip -q -d /tmp glew-${ver}-win32.zip
+	mv /tmp/glew-${ver}/bin/Release/x64/glew32.dll cjit-demo/
+	mv /tmp/glew-${ver}/include/GL cjit-demo/
+	rm -rf /tmp/glew-${ver}
 }
 
 tar  --format ustar -czf cjit-demo.tar.gz cjit-demo