diff --git a/src/sdl/i_gui.cpp b/src/sdl/i_gui.cpp
index bccd81972..b40fb7517 100644
--- a/src/sdl/i_gui.cpp
+++ b/src/sdl/i_gui.cpp
@@ -9,8 +9,8 @@
 #include "v_palette.h"
 #include "textures.h"
 
-SDL_Surface *cursorSurface = NULL;
-SDL_Rect cursorBlit = {0, 0, 32, 32};
+extern SDL_Surface *cursorSurface;
+extern SDL_Rect cursorBlit;
 
 #ifdef USE_XCURSOR
 // Xlib has its own GC, so don't let it interfere.
diff --git a/src/sdl/sdlvideo.cpp b/src/sdl/sdlvideo.cpp
index 59587fc0b..e4222633d 100644
--- a/src/sdl/sdlvideo.cpp
+++ b/src/sdl/sdlvideo.cpp
@@ -81,10 +81,11 @@ struct MiniModeInfo
 // EXTERNAL DATA DECLARATIONS ----------------------------------------------
 
 extern IVideo *Video;
-extern SDL_Surface *cursorSurface;
-extern SDL_Rect cursorBlit;
 extern bool GUICapture;
 
+SDL_Surface *cursorSurface = NULL;
+SDL_Rect cursorBlit = {0, 0, 32, 32};
+
 EXTERN_CVAR (Float, Gamma)
 EXTERN_CVAR (Int, vid_maxfps)
 EXTERN_CVAR (Bool, cl_capfps)