diff --git a/src/utilities/_hypre_utilities.h b/src/utilities/_hypre_utilities.h
index 84fc197d9..763cbdb96 100644
--- a/src/utilities/_hypre_utilities.h
+++ b/src/utilities/_hypre_utilities.h
@@ -2307,9 +2307,9 @@ first_lsb_bit_indx( hypre_uint x )
 static inline HYPRE_BigInt
 hypre_BigHash( HYPRE_BigInt input )
 {
-   hypre_ulongint h64 = HYPRE_XXH_PRIME64_5 + sizeof(input);
+   hypre_ulonglongint h64 = HYPRE_XXH_PRIME64_5 + sizeof(input);
 
-   hypre_ulongint k1 = input;
+   hypre_ulonglongint k1 = input;
    k1 *= HYPRE_XXH_PRIME64_2;
    k1 = HYPRE_XXH_rotl64(k1, 31);
    k1 *= HYPRE_XXH_PRIME64_1;
@@ -2361,9 +2361,9 @@ hypre_BigHash(HYPRE_Int input)
 static inline HYPRE_Int
 hypre_Hash(HYPRE_Int input)
 {
-   hypre_ulongint h64 = HYPRE_XXH_PRIME64_5 + sizeof(input);
+   hypre_ulonglongint h64 = HYPRE_XXH_PRIME64_5 + sizeof(input);
 
-   hypre_ulongint k1 = input;
+   hypre_ulonglongint k1 = input;
    k1 *= HYPRE_XXH_PRIME64_2;
    k1 = HYPRE_XXH_rotl64(k1, 31);
    k1 *= HYPRE_XXH_PRIME64_1;
diff --git a/src/utilities/hopscotch_hash.h b/src/utilities/hopscotch_hash.h
index b5bfbff59..b9ba83d7a 100644
--- a/src/utilities/hopscotch_hash.h
+++ b/src/utilities/hopscotch_hash.h
@@ -209,9 +209,9 @@ first_lsb_bit_indx( hypre_uint x )
 static inline HYPRE_BigInt
 hypre_BigHash( HYPRE_BigInt input )
 {
-   hypre_ulongint h64 = HYPRE_XXH_PRIME64_5 + sizeof(input);
+   hypre_ulonglongint h64 = HYPRE_XXH_PRIME64_5 + sizeof(input);
 
-   hypre_ulongint k1 = input;
+   hypre_ulonglongint k1 = input;
    k1 *= HYPRE_XXH_PRIME64_2;
    k1 = HYPRE_XXH_rotl64(k1, 31);
    k1 *= HYPRE_XXH_PRIME64_1;
@@ -263,9 +263,9 @@ hypre_BigHash(HYPRE_Int input)
 static inline HYPRE_Int
 hypre_Hash(HYPRE_Int input)
 {
-   hypre_ulongint h64 = HYPRE_XXH_PRIME64_5 + sizeof(input);
+   hypre_ulonglongint h64 = HYPRE_XXH_PRIME64_5 + sizeof(input);
 
-   hypre_ulongint k1 = input;
+   hypre_ulonglongint k1 = input;
    k1 *= HYPRE_XXH_PRIME64_2;
    k1 = HYPRE_XXH_rotl64(k1, 31);
    k1 *= HYPRE_XXH_PRIME64_1;