--- a/js/src/jstracer.cpp
+++ b/js/src/jstracer.cpp
@@ -4884,18 +4884,17 @@ TraceRecorder::record_JSOP_CALL()
                 JSArena* a = cx->stackPool.current;
                 if (jsuword(newsp) > a->limit)
                     ABORT_TRACE("can't grow stack for Function.prototype.apply");
                 if (jsuword(newsp) > a->avail)
                     a->avail = jsuword(newsp);
             }
 
             jsval* argv = fp->argv;
-            uintN nargs = JS_MIN((JS_MIN(argc, fp->fun->nargs)), 2);
-            for (uintN i = 0; i < nargs; i++) {
+            for (uintN i = 0; i < JS_MIN(argc, 2); i++) {
                 set(&sp[i], get(&argv[i]));
                 sp[i] = argv[i];
             }
             applyingArguments = true;
             return interpretedFunctionCall(tval, tfun, argc, false);
         }
 
         if (aval_ins->fid() != F_Array_1str)