diff --git a/src/cc65/codeent.c b/src/cc65/codeent.c
index 427a17ef1..f9e74a11c 100644
--- a/src/cc65/codeent.c
+++ b/src/cc65/codeent.c
@@ -245,8 +245,8 @@ CodeEntry* NewCodeEntry (opc_t OPC, am_t AM, const char* Arg,
     E->OPC    = D->OPC;
     E->AM     = AM;
     E->Size   = GetInsnSize (E->OPC, E->AM);
-    E->Flags  = NumArg (E->Arg, &E->Num)? CEF_NUMARG : 0;
     E->Arg    = GetArgCopy (Arg);
+    E->Flags  = NumArg (E->Arg, &E->Num)? CEF_NUMARG : 0;   /* Needs E->Arg */
     E->Info   = D->Info;
     E->JumpTo = JumpTo;
     E->LI     = UseLineInfo (LI);