diff --git a/src/corelib/codecs/qiconvcodec.cpp b/src/corelib/codecs/qiconvcodec.cpp
index 1941b70f24..aa0ddca753 100644
--- a/src/corelib/codecs/qiconvcodec.cpp
+++ b/src/corelib/codecs/qiconvcodec.cpp
@@ -286,12 +286,16 @@ QString QIconvCodec::convertToUnicode(const char* chars, int len, ConverterState
         }
     } while (inBytesLeft != 0);
 
-    QString s = utf16Codec->toUnicode(ba.constData(), ba.size() - outBytesLeft);
+    QString s;
 
     if (convState) {
+        s = utf16Codec->toUnicode(ba.constData(), ba.size() - outBytesLeft, &state->internalState);
+
         convState->invalidChars = invalidCount;
         convState->remainingChars = remainingCount;
     } else {
+        s = utf16Codec->toUnicode(ba.constData(), ba.size() - outBytesLeft);
+
         // reset state
         iconv(state->cd, 0, &inBytesLeft, 0, &outBytesLeft);
     }
diff --git a/src/corelib/codecs/qiconvcodec_p.h b/src/corelib/codecs/qiconvcodec_p.h
index c4ea4600e8..efe3b4b5f7 100644
--- a/src/corelib/codecs/qiconvcodec_p.h
+++ b/src/corelib/codecs/qiconvcodec_p.h
@@ -87,6 +87,7 @@ public:
     public:
         IconvState(iconv_t x);
         ~IconvState();
+        ConverterState internalState;
         char *buffer;
         int bufferLen;
         iconv_t cd;