diff --git a/codegen.py b/codegen.py
index 113d9be..a8b4489 100644
--- a/codegen.py
+++ b/codegen.py
@@ -439,9 +439,11 @@ def visit_Dict(self, node):
         self.write('}')
 
     def visit_BinOp(self, node):
+        self.write('(')
         self.visit(node.left)
         self.write(' %s ' % BINOP_SYMBOLS[type(node.op)])
         self.visit(node.right)
+        self.write(')')
 
     def visit_BoolOp(self, node):
         self.write('(')