diff --git a/gazebo_ros/scripts/debug b/gazebo_ros/scripts/debug
index 37cd902de..e1326766c 100755
--- a/gazebo_ros/scripts/debug
+++ b/gazebo_ros/scripts/debug
@@ -2,7 +2,7 @@
 final="$@"
 
 EXT=so
-if [ $(uname) == "Darwin" ]; then
+if [ $(uname) = "Darwin" ]; then
     EXT=dylib
 fi