diff --git a/src/idl_parser.cpp b/src/idl_parser.cpp
index b533d213e..31af4738c 100644
--- a/src/idl_parser.cpp
+++ b/src/idl_parser.cpp
@@ -1513,7 +1513,7 @@ CheckedError Parser::SkipAnyJsonValue() {
       EXPECT(kTokenFloatConstant);
       break;
     default:
-      return Error(std::string("Unexpected token:") + std::string(1, token_));
+      return Error(std::string("Unexpected token:") + std::string(1, static_cast<char>(token_)));
   }
   return NoError();
 }
@@ -1522,7 +1522,7 @@ CheckedError Parser::SkipJsonObject() {
   EXPECT('{');
   size_t fieldn = 0;
 
-  while (true) {
+  for (;;) {
     if ((!opts.strict_json || !fieldn) && Is('}')) break;
 
     if (!Is(kTokenStringConstant))
@@ -1543,7 +1543,7 @@ CheckedError Parser::SkipJsonObject() {
 CheckedError Parser::SkipJsonArray() {
   EXPECT('[');
   
-  while (true) {
+  for (;;) {
     if (Is(']')) break;
         
     ECHECK(SkipAnyJsonValue());