diff --git a/src/coreclr/jit/regset.h b/src/coreclr/jit/regset.h
index 20b55610594fc..99c7f8be6bc55 100644
--- a/src/coreclr/jit/regset.h
+++ b/src/coreclr/jit/regset.h
@@ -74,13 +74,8 @@ class RegSet
     bool rsModifiedRegsMaskInitialized; // Has rsModifiedRegsMask been initialized? Guards against illegal use.
 #endif                                  // DEBUG
 
-#ifdef SWIFT_SUPPORT
-    regMaskTP rsAllCalleeSavedMask;
-    regMaskTP rsIntCalleeSavedMask;
-#else  // !SWIFT_SUPPORT
-    static constexpr regMaskTP rsAllCalleeSavedMask = RBM_CALLEE_SAVED;
-    static constexpr regMaskTP rsIntCalleeSavedMask = RBM_INT_CALLEE_SAVED;
-#endif // !SWIFT_SUPPORT
+    regMaskTP rsAllCalleeSavedMask = RBM_CALLEE_SAVED;
+    regMaskTP rsIntCalleeSavedMask = RBM_INT_CALLEE_SAVED;
 
 public:
     regMaskTP rsGetModifiedRegsMask() const