diff --git a/tools/elf_mem_map b/tools/elf_mem_map
index b6aec2c60..3bd0f23e5 100755
--- a/tools/elf_mem_map
+++ b/tools/elf_mem_map
@@ -270,7 +270,7 @@ def decode_dump(path):
     return (buf_addr, buf_data)
 
 
-def annotate_refs(grefs, addr, data, width=46, gaps=True, overlaps=True):
+def annotate_refs(grefs, addr, data, width, gaps=True, overlaps=True):
     last_end = None
     for entry in grefs:
         if entry.loc < addr:
@@ -327,7 +327,7 @@ def main():
                     help='do not decode structure data')
     ap.add_argument('--overlaps', action='store_true',
                     help='annotate overlaps greater than 1 byte')
-    ap.add_argument('--name-width', type=int, default=46,
+    ap.add_argument('--name-width', type=int, default=50,
                     help='set name column width')
     g = ap.add_mutually_exclusive_group(required=True)
     g.add_argument('dump', nargs='?', help='RAM dump obtained from D2 g-code')