diff --git a/src/confdoc/docs/generator.py b/src/confdoc/docs/generator.py
index d263930..30688f4 100644
--- a/src/confdoc/docs/generator.py
+++ b/src/confdoc/docs/generator.py
@@ -132,7 +132,7 @@ class DocGenerator:
         lines.append("")
         
         header = "| " + " | ".join(columns) + " |"
-        separator = "| " + "| ".join("-" * len(col) for col in columns) + " |"
+        separator = "| " + " | ".join("-" * len(col) for col in columns) + " |"
         
         lines.append(header)
         lines.append(separator)