diff --git a/polymer/eduke32/build/src/sdlayer.c b/polymer/eduke32/build/src/sdlayer.c
index 22aa56d70..ec0681c51 100644
--- a/polymer/eduke32/build/src/sdlayer.c
+++ b/polymer/eduke32/build/src/sdlayer.c
@@ -106,7 +106,7 @@ static uint16_t sysgamma[3][256];
 // OpenGL stuff
 char nogl=0;
 #endif
-static int vsync_renderlayer;
+static int32_t vsync_renderlayer;
 int32_t maxrefreshfreq=0;
 
 // last gamma, contrast, brightness
@@ -503,7 +503,7 @@ int32_t main(int32_t argc, char *argv[])
 
 
 #if SDL_MAJOR_VERSION != 1
-int setvsync(int newSync)
+int32_t setvsync(int32_t newSync)
 {
     if (vsync_renderlayer == newSync)
         return newSync;
diff --git a/polymer/eduke32/build/src/sdlayer12.c b/polymer/eduke32/build/src/sdlayer12.c
index 7d841e037..6d6da9079 100644
--- a/polymer/eduke32/build/src/sdlayer12.c
+++ b/polymer/eduke32/build/src/sdlayer12.c
@@ -55,7 +55,7 @@ HWND win_gethwnd(void)
 }
 #endif
 
-int setvsync(int newSync)
+int32_t setvsync(int32_t newSync)
 {
     if (vsync_renderlayer == newSync)
         return newSync;
diff --git a/polymer/eduke32/build/src/winlayer.c b/polymer/eduke32/build/src/winlayer.c
index 0bb5de185..f91b0cb3c 100644
--- a/polymer/eduke32/build/src/winlayer.c
+++ b/polymer/eduke32/build/src/winlayer.c
@@ -1721,7 +1721,7 @@ int32_t setvideomode(int32_t x, int32_t y, int32_t c, int32_t fs)
 
 #define CHECK(w,h) if ((w < maxx) && (h < maxy))
 
-int setvsync(int newSync)
+int32_t setvsync(int32_t newSync)
 {
 #ifdef USE_OPENGL
     if (!glinfo.vsync)