--- a/js/src/nanojit/LIR.h
+++ b/js/src/nanojit/LIR.h
@@ -678,17 +678,17 @@ namespace nanojit
         inline LIns*    getTarget() const;
         inline void     setTarget(LIns* label);
 
         // For guards.
         inline GuardRecord* record() const;
 
         // For loads/stores.
         inline int32_t  disp() const;
-        inline int32_t  accSet() const;
+        inline AccSet   accSet() const;
 
         // For LInsSk.
         inline LIns*    prevLIns() const;
 
         // For LInsP.
         inline uint8_t  paramArg()  const;
         inline uint8_t  paramKind() const;
 
@@ -1290,17 +1290,17 @@ namespace nanojit
         if (isLInsSti()) {
             return toLInsSti()->disp;
         } else {
             NanoAssert(isLInsLd());
             return toLInsLd()->disp;
         }
     }
 
-    int32_t LIns::accSet() const {
+    AccSet LIns::accSet() const {
         if (isLInsSti()) {
             return toLInsSti()->accSet;
         } else {
             NanoAssert(isLInsLd());
             return toLInsLd()->accSet;
         }
     }