diff --git a/polymer/eduke32/build/src/sdlayer.c b/polymer/eduke32/build/src/sdlayer.c
index 76ff22dd4..a6f5b9dba 100644
--- a/polymer/eduke32/build/src/sdlayer.c
+++ b/polymer/eduke32/build/src/sdlayer.c
@@ -104,7 +104,7 @@ static uint16_t sysgamma[3][256];
 // OpenGL stuff
 char nogl=0;
 #endif
-static int sdl_vsync=0;
+static int vsync_renderlayer;
 int32_t maxrefreshfreq=0;
 
 // last gamma, contrast, brightness
@@ -504,7 +504,7 @@ int setvsync(int newSync);
 #if SDL_MAJOR_VERSION != 1
 int setvsync(int newSync)
 {
-    if (sdl_vsync == newSync)
+    if (vsync_renderlayer == newSync)
         return newSync;
 
 #ifdef USE_OPENGL
@@ -527,19 +527,19 @@ int setvsync(int newSync)
             }
         }
 
-        sdl_vsync = newSync;
+        vsync_renderlayer = newSync;
     }
     else
 #endif
     {
-        sdl_vsync = newSync;
+        vsync_renderlayer = newSync;
 
         resetvideomode();
         if (setgamemode(fullscreen, xdim, ydim, bpp))
             OSD_Printf("restartvid: Reset failed...\n");
     }
 
-    return sdl_vsync;
+    return vsync_renderlayer;
 }
 #endif
 
@@ -1551,7 +1551,7 @@ static void sdl_trycreaterenderer_fail(char const * const failurepoint)
 
 static void sdl_trycreaterenderer(int32_t const x, int32_t const y)
 {
-    int const flags = SDL_RENDERER_ACCELERATED | (sdl_vsync ? SDL_RENDERER_PRESENTVSYNC : 0);
+    int const flags = SDL_RENDERER_ACCELERATED | (vsync_renderlayer ? SDL_RENDERER_PRESENTVSYNC : 0);
 
     sdl_renderer = SDL_CreateRenderer(sdl_window, -1, flags);
     if (!sdl_renderer)
@@ -1658,7 +1658,7 @@ int32_t setvideomode(int32_t x, int32_t y, int32_t c, int32_t fs)
                 return -1;
             }
 
-            SDL_GL_SetSwapInterval(sdl_vsync);
+            SDL_GL_SetSwapInterval(vsync_renderlayer);
 
             setrefreshrate();
 
diff --git a/polymer/eduke32/build/src/sdlayer12.c b/polymer/eduke32/build/src/sdlayer12.c
index 6d8ce4a29..296f1b8a5 100644
--- a/polymer/eduke32/build/src/sdlayer12.c
+++ b/polymer/eduke32/build/src/sdlayer12.c
@@ -58,16 +58,16 @@ HWND win_gethwnd(void)
 #ifdef USE_OPENGL
 int setvsync(int newSync)
 {
-    if (sdl_vsync == newSync)
+    if (vsync_renderlayer == newSync)
         return newSync;
 
-    sdl_vsync = newSync;
+    vsync_renderlayer = newSync;
 
     resetvideomode();
     if (setgamemode(fullscreen, xdim, ydim, bpp))
         OSD_Printf("restartvid: Reset failed...\n");
 
-    return sdl_vsync;
+    return vsync_renderlayer;
 }
 #endif
 
@@ -394,7 +394,7 @@ int32_t setvideomode(int32_t x, int32_t y, int32_t c, int32_t fs)
             { SDL_GL_MULTISAMPLESAMPLES, glmultisample },
             { SDL_GL_STENCIL_SIZE, 1 },
             { SDL_GL_ACCELERATED_VISUAL, 1 },
-            { SDL_GL_SWAP_CONTROL, sdl_vsync },
+            { SDL_GL_SWAP_CONTROL, vsync_renderlayer },
         };
 
         do
@@ -404,7 +404,7 @@ int32_t setvideomode(int32_t x, int32_t y, int32_t c, int32_t fs)
             /* HACK: changing SDL GL attribs only works before surface creation,
                so we have to create a new surface in a different format first
                to force the surface we WANT to be recreated instead of reused. */
-            if (sdl_vsync != ovsync)
+            if (vsync_renderlayer != ovsync)
             {
                 if (sdl_surface)
                 {
@@ -413,7 +413,7 @@ int32_t setvideomode(int32_t x, int32_t y, int32_t c, int32_t fs)
                     SDL_SetVideoMode(1, 1, 8, SDL_NOFRAME | SURFACE_FLAGS | ((fs & 1) ? SDL_FULLSCREEN : 0));
                     SDL_FreeSurface(sdl_surface);
                 }
-                ovsync = sdl_vsync;
+                ovsync = vsync_renderlayer;
             }
             sdl_surface = SDL_SetVideoMode(x, y, c, SDL_OPENGL | ((fs & 1) ? SDL_FULLSCREEN : 0));
             if (!sdl_surface)
diff --git a/polymer/eduke32/build/src/winlayer.c b/polymer/eduke32/build/src/winlayer.c
index 165cdcb16..8125a0b60 100644
--- a/polymer/eduke32/build/src/winlayer.c
+++ b/polymer/eduke32/build/src/winlayer.c
@@ -131,7 +131,7 @@ int32_t bytesperline=0;
 int32_t lockcount=0;
 int32_t glcolourdepth=32;
 #ifdef USE_OPENGL
-static int32_t vsync_render=0;
+static int32_t vsync_renderlayer;
 #endif
 uint32_t maxrefreshfreq=60;
 intptr_t frameplace=0;
@@ -1698,7 +1698,7 @@ int32_t setvideomode(int32_t x, int32_t y, int32_t c, int32_t fs)
     }
 
 #if defined USE_OPENGL && defined USE_GLEXT
-    if (hGLWindow && glinfo.vsync) bwglSwapIntervalEXT(vsync_render);
+    if (hGLWindow && glinfo.vsync) bwglSwapIntervalEXT(vsync_renderlayer);
 #endif
     if (inp) AcquireInputDevices(1);
     modechange=1;
@@ -1730,10 +1730,10 @@ int setvsync(int newSync)
 {
     if (!glinfo.vsync)
     {
-        vsync_render = 0;
+        vsync_renderlayer = 0;
         return 0;
     }
-    vsync_render = newSync;
+    vsync_renderlayer = newSync;
 # ifdef USE_GLEXT
     bwglSwapIntervalEXT(newSync);
 # endif