diff --git a/src/platform/sdl/CMakeLists.txt b/src/platform/sdl/CMakeLists.txt
index 0c2fc771b..ebea9f84f 100644
--- a/src/platform/sdl/CMakeLists.txt
+++ b/src/platform/sdl/CMakeLists.txt
@@ -15,7 +15,7 @@ endif()
 if(SDL_VERSION EQUAL "1.2" OR NOT SDL2_FOUND)
 	find_package(SDL 1.2)
 	if(SDL_FOUND)
-		set(SDL_VERSION "1.2" PARENT_SCOPE)
+		set(SDL_VERSION "1.2")
 		set(SDL_VERSION_DEBIAN "1.2debian")
 		set(USE_PIXMAN ON)
 	endif()
@@ -26,6 +26,7 @@ if (NOT SDL2_FOUND AND NOT SDL_FOUND)
 	return()
 endif()
 
+set(SDL_VERSION "${SDL_VERSION}" PARENT_SCOPE)
 add_definitions(-DBUILD_SDL)
 
 find_feature(USE_PIXMAN "pixman-1")