diff --git a/src/d_player.h b/src/d_player.h
index 3bbd16f66..33e7026e3 100644
--- a/src/d_player.h
+++ b/src/d_player.h
@@ -258,7 +258,7 @@ typedef enum
 #define TRICKDELAY (TICRATE/4)
 
 #define TUMBLEBOUNCES 3
-#define TUMBLEGRAVITY (5*FRACUNIT/2)
+#define TUMBLEGRAVITY (4*FRACUNIT)
 
 //}