diff --git a/cmake/sdlchecks.cmake b/cmake/sdlchecks.cmake
index 3e3dab61fd..6ccc994911 100644
--- a/cmake/sdlchecks.cmake
+++ b/cmake/sdlchecks.cmake
@@ -442,7 +442,7 @@ macro(CheckX11)
         /usr/openwin/share/include
         /opt/graphics/OpenGL/include
         /opt/X11/include
-        /opt/local/include/X11
+        /opt/local/include
     )
 
     if(X_INCLUDEDIR)