diff --git a/tools/test_modules/m00610.pm b/tools/test_modules/m00610.pm
index b8f5a224d..61ad8e43b 100644
--- a/tools/test_modules/m00610.pm
+++ b/tools/test_modules/m00610.pm
@@ -19,7 +19,7 @@ sub module_generate_hash
 
   my $digest = blake2b_hex ($word . $salt);
 
-  my $hash = sprintf ("\$BLAKE2\$%s:%s", $digest, $salt);
+  my $hash = sprintf ("\$BLAKE2\$%s:%s", lc ($digest), $salt);
 
   return $hash;
 }
diff --git a/tools/test_modules/m00620.pm b/tools/test_modules/m00620.pm
index b3a9cba65..6c0c9e714 100644
--- a/tools/test_modules/m00620.pm
+++ b/tools/test_modules/m00620.pm
@@ -19,7 +19,7 @@ sub module_generate_hash
 
   my $digest = blake2b_hex ($salt . $word);
 
-  my $hash = sprintf ("\$BLAKE2\$%s:%s", $digest, $salt);
+  my $hash = sprintf ("\$BLAKE2\$%s:%s", lc ($digest), $salt);
 
   return $hash;
 }