diff --git a/game.h b/game.h
index d41456d..568fe88 100644
--- a/game.h
+++ b/game.h
@@ -8,7 +8,7 @@
 
 extern double delta; /* simulation time delta in seconds */
 
-#define DEFAULT_DELTA 0.01
+#define DEFAULT_DELTA 0.001
 
 extern int width;  /* game canvas width */
 extern int height; /* game canvas height */