diff --git a/src/add-ons/kernel/network/protocols/ipv4/multicast.cpp b/src/add-ons/kernel/network/protocols/ipv4/multicast.cpp
index 4cedcd5976..94a87cf5c6 100644
--- a/src/add-ons/kernel/network/protocols/ipv4/multicast.cpp
+++ b/src/add-ons/kernel/network/protocols/ipv4/multicast.cpp
@@ -195,7 +195,8 @@ MulticastFilter<Addressing>::GetState(const AddressType &groupAddress,
 			return status;
 		}
 
-	}
+	} else if (create)
+		return EADDRINUSE;
 
 	return B_OK;
 }