diff --git a/dlls/rsaenh/implglue.c b/dlls/rsaenh/implglue.c
index b4fe985af9b..636fe4b6ee0 100644
--- a/dlls/rsaenh/implglue.c
+++ b/dlls/rsaenh/implglue.c
@@ -70,9 +70,9 @@ BOOL update_hash_impl(BCRYPT_HASH_HANDLE hash_handle, const BYTE *pbData, DWORD
     return TRUE;
 }
 
-BOOL finalize_hash_impl(BCRYPT_HASH_HANDLE hash_handle, BYTE *pbHashValue)
+BOOL finalize_hash_impl(BCRYPT_HASH_HANDLE hash_handle, BYTE *hash_value, DWORD hash_size)
 {
-    BCryptFinishHash(hash_handle, pbHashValue, RSAENH_MAX_HASH_SIZE, 0);
+    BCryptFinishHash(hash_handle, hash_value, hash_size, 0);
     BCryptDestroyHash(hash_handle);
     return TRUE;
 }
diff --git a/dlls/rsaenh/implglue.h b/dlls/rsaenh/implglue.h
index 06fa3f4430a..423474dc52e 100644
--- a/dlls/rsaenh/implglue.h
+++ b/dlls/rsaenh/implglue.h
@@ -41,7 +41,7 @@ typedef union tagKEY_CONTEXT {
 BOOL init_hash_impl(ALG_ID aiAlgid, BCRYPT_HASH_HANDLE *hash_handle) DECLSPEC_HIDDEN;
 BOOL update_hash_impl(BCRYPT_HASH_HANDLE hash_handle, const BYTE *pbData,
                       DWORD dwDataLen) DECLSPEC_HIDDEN;
-BOOL finalize_hash_impl(BCRYPT_HASH_HANDLE hash_handle, BYTE *pbHashValue) DECLSPEC_HIDDEN;
+BOOL finalize_hash_impl(BCRYPT_HASH_HANDLE hash_handle, BYTE *hash_value, DWORD hash_size) DECLSPEC_HIDDEN;
 BOOL duplicate_hash_impl(BCRYPT_HASH_HANDLE src_hash_handle,
                          BCRYPT_HASH_HANDLE *dest_hash_handle) DECLSPEC_HIDDEN;
 
diff --git a/dlls/rsaenh/rsaenh.c b/dlls/rsaenh/rsaenh.c
index beac3c7e850..3a2d7126ca4 100644
--- a/dlls/rsaenh/rsaenh.c
+++ b/dlls/rsaenh/rsaenh.c
@@ -816,7 +816,7 @@ static inline void finalize_hash(CRYPTHASH *pCryptHash)
             if (pCryptHash->pHMACInfo) {
                 BYTE abHashValue[RSAENH_MAX_HASH_SIZE];
 
-                finalize_hash_impl(pCryptHash->hash_handle, pCryptHash->abHashValue);
+                finalize_hash_impl(pCryptHash->hash_handle, pCryptHash->abHashValue, pCryptHash->dwHashSize);
                 memcpy(abHashValue, pCryptHash->abHashValue, pCryptHash->dwHashSize);
                 init_hash_impl(pCryptHash->pHMACInfo->HashAlgid, &pCryptHash->hash_handle);
                 update_hash_impl(pCryptHash->hash_handle,
@@ -824,7 +824,7 @@ static inline void finalize_hash(CRYPTHASH *pCryptHash)
                                  pCryptHash->pHMACInfo->cbOuterString);
                 update_hash_impl(pCryptHash->hash_handle,
                                  abHashValue, pCryptHash->dwHashSize);
-                finalize_hash_impl(pCryptHash->hash_handle, pCryptHash->abHashValue);
+                finalize_hash_impl(pCryptHash->hash_handle, pCryptHash->abHashValue, pCryptHash->dwHashSize);
                 pCryptHash->hash_handle = NULL;
             } 
             break;
@@ -842,7 +842,7 @@ static inline void finalize_hash(CRYPTHASH *pCryptHash)
             break;
 
         default:
-            finalize_hash_impl(pCryptHash->hash_handle, pCryptHash->abHashValue);
+            finalize_hash_impl(pCryptHash->hash_handle, pCryptHash->abHashValue, pCryptHash->dwHashSize);
             pCryptHash->hash_handle = NULL;
     }
 }