diff --git a/Source/multi.cpp b/Source/multi.cpp
index d382d81a5..276ed2be6 100644
--- a/Source/multi.cpp
+++ b/Source/multi.cpp
@@ -70,11 +70,10 @@ void __cdecl dumphist(const char *pszFmt, ...)
 }
 #endif
 
-void multi_msg_add(BYTE *a1, unsigned char a2)
+void multi_msg_add(BYTE *pbMsg, BYTE bLen)
 {
-	if (a1) {
-		if (a2)
-			tmsg_add(a1, a2);
+	if (pbMsg && bLen) {
+		tmsg_add(pbMsg, bLen);
 	}
 }
 
diff --git a/Source/multi.h b/Source/multi.h
index 8480fa2d5..6e9e103e3 100644
--- a/Source/multi.h
+++ b/Source/multi.h
@@ -18,7 +18,7 @@ extern int player_state[MAX_PLRS];
 #ifdef _DEBUG
 void __cdecl dumphist(const char *pszFmt, ...);
 #endif
-void multi_msg_add(BYTE *a1, unsigned char a2);
+void multi_msg_add(BYTE *pbMsg, BYTE bLen);
 void NetSendLoPri(BYTE *pbMsg, BYTE bLen);
 void multi_copy_packet(TBuffer *a1, void *packet, BYTE size);
 void multi_send_packet(void *packet, BYTE dwSize);