diff --git a/source/netmsg.cpp b/source/netmsg.cpp
index d06f200..88639b3 100644
--- a/source/netmsg.cpp
+++ b/source/netmsg.cpp
@@ -119,6 +119,10 @@ void NetworkMsg::Execute (void *p)
          break;
 
       case 8:
+
+         if (weaponProp.ammo1 > 31)
+            weaponProp.ammo1 = -1;
+
          weaponProp.flags = PTR_TO_INT (p); // flags for weapon (WTF???)
          g_weaponDefs[weaponProp.id] = weaponProp; // store away this weapon with it's ammo information...
          break;