diff --git a/render.c b/render.c
index 64190d5..09d6ddc 100644
--- a/render.c
+++ b/render.c
@@ -87,7 +87,7 @@ DWORD WINAPI render_main(void)
 
     glEnable(GL_TEXTURE_2D);
 
-    while(ddraw->render.run && WaitForSingleObject(ddraw->render.sem, INFINITE) == WAIT_OBJECT_0)
+    while(ddraw->render.run && WaitForSingleObject(ddraw->render.sem, 100) != WAIT_FAILED)
     {
         scale_w = (float)ddraw->width/tex_width;
         scale_h = (float)ddraw->height/tex_height;
diff --git a/render_soft.c b/render_soft.c
index 7666f2b..94bb3ff 100644
--- a/render_soft.c
+++ b/render_soft.c
@@ -50,7 +50,7 @@ DWORD WINAPI render_soft_main(void)
         frame_len = 1000.0f / ddraw->render.maxfps;
     }
 
-    while (ddraw->render.run && WaitForSingleObject(ddraw->render.sem, INFINITE) == WAIT_OBJECT_0)
+    while (ddraw->render.run && WaitForSingleObject(ddraw->render.sem, 100) != WAIT_FAILED)
     {
         if(ddraw->render.maxfps > 0)
         {