diff --git a/source/src/weapon.cpp b/source/src/weapon.cpp
index 7072e34d..8ba0434b 100644
--- a/source/src/weapon.cpp
+++ b/source/src/weapon.cpp
@@ -553,6 +553,7 @@ grenadeent::grenadeent (playerent *owner, int millis)
     bouncetype = BT_NADE;
     maxspeed = 30.0f;
     rotspeed = 6.0f;
+    lastcollision = 0;
 }
 
 void grenadeent::explode()
@@ -629,7 +630,15 @@ void grenadeent::moveoutsidebbox(const vec &direction, playerent *boundingbox)
 
 void grenadeent::destroy() { explode(); }
 bool grenadeent::applyphysics() { return nadestate==NS_THROWED; }
-void grenadeent::oncollision() { if(nadestate==NS_THROWED) playsound(S_GRENADEBOUNCE1+rnd(2), this, 0, 0); }
+
+void grenadeent::oncollision() 
+{ 
+    if(nadestate==NS_THROWED && (!lastcollision || lastmillis-lastcollision>50)) 
+    {
+        playsound(S_GRENADEBOUNCE1+rnd(2), this, 0, 0); 
+        lastcollision = lastmillis;
+    }
+}
 
 // grenades