diff --git a/src/g_monster.c b/src/g_monster.c
index 0d7dfba..58b63b6 100644
--- a/src/g_monster.c
+++ b/src/g_monster.c
@@ -425,7 +425,7 @@ M_CheckGround(edict_t *ent)
 		VectorCopy(trace.endpos, ent->s.origin);
 		ent->groundentity = trace.ent;
 		ent->groundentity_linkcount = trace.ent->linkcount;
-		ent->velocity[2] = 0;
+		ent->velocity[2] = trace.ent->velocity[2];
 	}
 }