diff --git a/plugins/spu2-x/src/CMakeLists.txt b/plugins/spu2-x/src/CMakeLists.txt
index 5dcfa4da73..a8399ddfd1 100644
--- a/plugins/spu2-x/src/CMakeLists.txt
+++ b/plugins/spu2-x/src/CMakeLists.txt
@@ -113,9 +113,9 @@ include_directories(.  Linux)
 if(SDL_FOUND)
     list(APPEND spu2xSources SndOut_SDL.cpp)
     if(SDL2_API)
-        add_definitions(-DSPU2X_SDL)
-    else()
         add_definitions(-DSPU2X_SDL2)
+    else()
+        add_definitions(-DSPU2X_SDL)
     endif()
   #elseif(SDL2_FOUND)
   #  add_definitions(-DSPU2X_SDL2)