diff --git a/src/p_mobj.c b/src/p_mobj.c
index 81551c6a0..44a701ee9 100644
--- a/src/p_mobj.c
+++ b/src/p_mobj.c
@@ -622,7 +622,7 @@ boolean P_SetPlayerMobjState(mobj_t *mobj, statenum_t state)
 			mobj->sprite = st->sprite;
 			mobj->frame = st->frame;
 			if ((st->frame & (FF_ANIMATE|FF_MIDDLESTARTCHANCE)) == (FF_ANIMATE|FF_MIDDLESTARTCHANCE))
-				mobj->frame += P_RandomKey(st->var1);
+				mobj->frame += P_RandomKey(st->var1+1);
 		}
 
 		// Modified handling.
@@ -737,7 +737,7 @@ boolean P_SetMobjState(mobj_t *mobj, statenum_t state)
 			mobj->sprite = st->sprite;
 			mobj->frame = st->frame;
 			if ((st->frame & (FF_ANIMATE|FF_MIDDLESTARTCHANCE)) == (FF_ANIMATE|FF_MIDDLESTARTCHANCE))
-				mobj->frame += P_RandomKey(st->var1);
+				mobj->frame += P_RandomKey(st->var1+1);
 		}
 
 		// Modified handling.