diff --git a/src/jit/lower.cpp b/src/jit/lower.cpp
index 13780ca1888c..85a5d8c082a9 100644
--- a/src/jit/lower.cpp
+++ b/src/jit/lower.cpp
@@ -5595,10 +5595,10 @@ void Lowering::getCastDescription(GenTree* treeNode, CastInfo* castInfo)
 
     if (castInfo->requiresOverflowCheck)
     {
-        ssize_t typeMin       = 0;
-        ssize_t typeMax       = 0;
-        ssize_t typeMask      = 0;
-        bool    signCheckOnly = false;
+        target_ssize_t typeMin       = 0;
+        target_ssize_t typeMax       = 0;
+        target_ssize_t typeMask      = 0;
+        bool           signCheckOnly = false;
 
         // Do we need to compare the value, or just check masks
         switch (dstType)
diff --git a/src/jit/lower.h b/src/jit/lower.h
index 656e1773245f..535d08194c7a 100644
--- a/src/jit/lower.h
+++ b/src/jit/lower.h
@@ -39,10 +39,10 @@ class Lowering : public Phase
 
         // All other fields are only meaningful if requiresOverflowCheck is set.
 
-        ssize_t typeMin;       // Lowest storable value of the dest type
-        ssize_t typeMax;       // Highest storable value of the dest type
-        ssize_t typeMask;      // For converting from/to unsigned
-        bool    signCheckOnly; // For converting between unsigned/signed int
+        target_ssize_t typeMin;       // Lowest storable value of the dest type
+        target_ssize_t typeMax;       // Highest storable value of the dest type
+        target_ssize_t typeMask;      // For converting from/to unsigned
+        bool           signCheckOnly; // For converting between unsigned/signed int
     };
 
     static void getCastDescription(GenTree* treeNode, CastInfo* castInfo);