diff --git a/src/parser.cc b/src/parser.cc
index 76ed9da..e97e91e 100644
--- a/src/parser.cc
+++ b/src/parser.cc
@@ -4110,7 +4110,7 @@ Expression* Parser::ParseObjectLiteral(bool* ok) {
             // Validate the property.
             checker.CheckProperty(property, loc, CHECK_OK);
             properties->Add(property, zone());
-            if (peek() != Token::RBRACE) Expect(Token::COMMA, CHECK_OK);
+            if (peek() != Token::RBRACE) { Expect(Token::COMMA, CHECK_OK); }
 
             if (fni_ != NULL) {
               fni_->Infer();
@@ -4180,7 +4180,7 @@ Expression* Parser::ParseObjectLiteral(bool* ok) {
     properties->Add(property, zone());
 
     // TODO(1240767): Consider allowing trailing comma.
-    if (peek() != Token::RBRACE) Expect(Token::COMMA, CHECK_OK);
+    if (peek() != Token::RBRACE) { Expect(Token::COMMA, CHECK_OK); }
 
     if (fni_ != NULL) {
       fni_->Infer();
@@ -4249,7 +4249,7 @@ ZoneList<Expression*>* Parser::ParseArguments(bool* ok) {
       return NULL;
     }
     done = (peek() == Token::RPAREN);
-    if (!done) Expect(Token::COMMA, CHECK_OK);
+    if (!done) { Expect(Token::COMMA, CHECK_OK); }
   }
   Expect(Token::RPAREN, CHECK_OK);
   return result;
@@ -4426,7 +4426,7 @@ FunctionLiteral* Parser::ParseFunctionLiteral(Handle<String> function_name,
         return NULL;
       }
       done = (peek() == Token::RPAREN);
-      if (!done) Expect(Token::COMMA, CHECK_OK);
+      if (!done) { Expect(Token::COMMA, CHECK_OK); }
     }
     Expect(Token::RPAREN, CHECK_OK);
 
diff --git a/src/preparser.cc b/src/preparser.cc
index 21da4f8..7769130 100644
--- a/src/preparser.cc
+++ b/src/preparser.cc
@@ -1306,7 +1306,7 @@ PreParser::Expression PreParser::ParseObjectLiteral(bool* ok) {
     ParseAssignmentExpression(true, CHECK_OK);
 
     // TODO(1240767): Consider allowing trailing comma.
-    if (peek() != i::Token::RBRACE) Expect(i::Token::COMMA, CHECK_OK);
+    if (peek() != i::Token::RBRACE) { Expect(i::Token::COMMA, CHECK_OK); }
   }
   Expect(i::Token::RBRACE, CHECK_OK);