diff --git a/taglib/toolkit/tstring.cpp b/taglib/toolkit/tstring.cpp
index 44788249..b81b084e 100644
--- a/taglib/toolkit/tstring.cpp
+++ b/taglib/toolkit/tstring.cpp
@@ -508,7 +508,7 @@ ByteVector String::data(Type t) const
       ByteVector v(size(), 0);
       char *p = v.data();
 
-      for(wstring::const_iterator it = d->data.begin(); it != d->data.end(); it++)
+      for(wstring::const_iterator it = d->data.begin(); it != d->data.end(); ++it)
         *p++ = static_cast<char>(*it);
 
       return v;
@@ -537,7 +537,7 @@ ByteVector String::data(Type t) const
       *p++ = '\xff';
       *p++ = '\xfe';
 
-      for(wstring::const_iterator it = d->data.begin(); it != d->data.end(); it++) {
+      for(wstring::const_iterator it = d->data.begin(); it != d->data.end(); ++it) {
         *p++ = static_cast<char>(*it & 0xff);
         *p++ = static_cast<char>(*it >> 8);
       }
@@ -549,7 +549,7 @@ ByteVector String::data(Type t) const
       ByteVector v(size() * 2, 0);
       char *p = v.data();
 
-      for(wstring::const_iterator it = d->data.begin(); it != d->data.end(); it++) {
+      for(wstring::const_iterator it = d->data.begin(); it != d->data.end(); ++it) {
         *p++ = static_cast<char>(*it >> 8);
         *p++ = static_cast<char>(*it & 0xff);
       }
@@ -561,7 +561,7 @@ ByteVector String::data(Type t) const
       ByteVector v(size() * 2, 0);
       char *p = v.data();
 
-      for(wstring::const_iterator it = d->data.begin(); it != d->data.end(); it++) {
+      for(wstring::const_iterator it = d->data.begin(); it != d->data.end(); ++it) {
         *p++ = static_cast<char>(*it & 0xff);
         *p++ = static_cast<char>(*it >> 8);
       }
@@ -611,7 +611,7 @@ String String::stripWhiteSpace() const
 
 bool String::isLatin1() const
 {
-  for(wstring::const_iterator it = d->data.begin(); it != d->data.end(); it++) {
+  for(wstring::const_iterator it = d->data.begin(); it != d->data.end(); ++it) {
     if(*it >= 256)
       return false;
   }
@@ -620,7 +620,7 @@ bool String::isLatin1() const
 
 bool String::isAscii() const
 {
-  for(wstring::const_iterator it = d->data.begin(); it != d->data.end(); it++) {
+  for(wstring::const_iterator it = d->data.begin(); it != d->data.end(); ++it) {
     if(*it >= 128)
       return false;
   }