diff --git a/dbms/src/Parsers/IAST.cpp b/dbms/src/Parsers/IAST.cpp
index e688567d894..e5d9b7fc29d 100644
--- a/dbms/src/Parsers/IAST.cpp
+++ b/dbms/src/Parsers/IAST.cpp
@@ -127,7 +127,6 @@ void IAST::FormatSettings::writeIdentifier(const String & name, WriteBuffer & ou
                 writeProbablyDoubleQuotedString(name, out);
             break;
         }
-        case
     }
 }