diff --git a/lib/hcrypto/evp.c b/lib/hcrypto/evp.c
index 23838709c..9cced4c53 100644
--- a/lib/hcrypto/evp.c
+++ b/lib/hcrypto/evp.c
@@ -485,17 +485,20 @@ EVP_md2(void) HC_DEPRECATED_CRYPTO
  *
  */
 
-static void
+static int
 null_Init (void *m)
 {
+    return 1;
 }
-static void
+static int
 null_Update (void *m, const void * data, size_t size)
 {
+    return 1;
 }
-static void
+static int
 null_Final(void *res, void *m)
 {
+    return 1;
 }
 
 /**