diff --git a/CMakeLists.txt b/CMakeLists.txt
index 61cf9b1c4..ac4f9e1bf 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -119,7 +119,6 @@ if(ENABLE_NOTIFY)
 endif()
 if(ENABLE_GTK_UI)
 	if(WIN32)
-		set(GTK2_DEBUG TRUE)
 		set(GTK2_ADDITIONAL_SUFFIXES "../lib/glib-2.0/include" "../lib/gtk-2.0/include")
 	endif()
 	find_package(GTK2 2.18 REQUIRED gtk)