diff --git a/SetOwner/scripting/SetOwner.sp b/SetOwner/scripting/SetOwner.sp
index 402943fa..719d272e 100644
--- a/SetOwner/scripting/SetOwner.sp
+++ b/SetOwner/scripting/SetOwner.sp
@@ -54,6 +54,9 @@ public MRESReturn Hook_AcceptInput(int iEntity, Handle hReturn, Handle hParams)
 	char sCommand[128];
 	DHookGetParamString(hParams, 1, sCommand, sizeof(sCommand));
 
+	if (DHookIsNullParam(hParams, 2))
+		return MRES_Ignored;
+
 	int iActivator = DHookGetParam(hParams, 2);
 	if (iActivator < 1 || iActivator > MaxClients)
 		return MRES_Ignored;