diff --git a/scripts/qmp/qmp-shell b/scripts/qmp/qmp-shell
index 4027454324..c46f4f516b 100755
--- a/scripts/qmp/qmp-shell
+++ b/scripts/qmp/qmp-shell
@@ -94,9 +94,12 @@ class QMPShellError(Exception):
 
 
 class FuzzyJSON(ast.NodeTransformer):
-    '''This extension of ast.NodeTransformer filters literal "true/false/null"
+    """
+    This extension of ast.NodeTransformer filters literal "true/false/null"
     values in an AST and replaces them by proper "True/False/None" values that
-    Python can properly evaluate.'''
+    Python can properly evaluate.
+    """
+
     @classmethod
     def visit_Name(cls, node):
         if node.id == 'true':