diff --git a/tools/update-tools-help.py b/tools/update-tools-help.py
index e64391b986..f951e8ee39 100755
--- a/tools/update-tools-help.py
+++ b/tools/update-tools-help.py
@@ -66,10 +66,9 @@ def main():
 
         cur_lines = cur_help.splitlines()
         new_lines = new_help.splitlines()
-        if ' (v' in cur_lines[0]:
-            # Assume we have a version. Strip it.
-            cur_lines[0] = ' '.join(cur_lines[0].split()[:-1])
-            new_lines[0] = ' '.join(new_lines[0].split()[:-1])
+        # Assume we have an extended version. Strip it.
+        cur_lines[0] = re.split(' \(v\d+\.\d+\.\d+', cur_lines[0])[0]
+        new_lines[0] = re.split(' \(v\d+\.\d+\.\d+', new_lines[0])[0]
         diff = list(difflib.unified_diff(cur_lines, new_lines))
 
         if (len(diff) > 0):