diff --git a/src/metadata_review_lib.py b/src/metadata_review_lib.py
index 6e753f7..7630bf9 100644
--- a/src/metadata_review_lib.py
+++ b/src/metadata_review_lib.py
@@ -65,7 +65,7 @@ def first_initialize_metadata_review(hdf5_file_path, reviewer_attrs):
     """
 
     initials = reviewer_attrs['initials']
-    branch_name = '-'.join([reviewer_attrs['type'],'review:',initials])
+    branch_name = '-'.join([reviewer_attrs['type'],'review_',initials])
 
     hdf5_file_path_tail, filename_path_head = os.path.split(hdf5_file_path)
     filename, ext = os.path.splitext(filename_path_head)