diff --git a/src/glfw_config.h.in b/src/glfw_config.h.in
index e4953245..7234eb95 100644
--- a/src/glfw_config.h.in
+++ b/src/glfw_config.h.in
@@ -74,7 +74,7 @@
 // Define this to 1 if glfwCreateWindow should populate the menu bar
 #cmakedefine _GLFW_USE_MENUBAR
 // Define this to 1 if windows should use full resolution on Retina displays
-#cmakedefine _GLFW_USE_MENUBAR
+#cmakedefine _GLFW_USE_RETINA
 
 // Define this to 1 if using OpenGL as the client library
 #cmakedefine _GLFW_USE_OPENGL