diff --git a/tools/json_tools/util.py b/tools/json_tools/util.py
index 129a1032e2378..db5b063e30f29 100755
--- a/tools/json_tools/util.py
+++ b/tools/json_tools/util.py
@@ -362,10 +362,7 @@ def list_of_lists(self, k, lol):
                 self.indent_multiplier -= 1
             self.buf.write("\n")
             self.indented_write("]")
-            if lol:
-                self.buf.write(",\n")
-            else:
-                self.buf.write("\n")
+            self.buf.write(",\n" if lol else "\n")
             self.indent_multiplier -= 1
         self.indented_write("]")