diff --git a/libs/main/core/pistring.cpp b/libs/main/core/pistring.cpp
index 541c0dcc..51b239c8 100644
--- a/libs/main/core/pistring.cpp
+++ b/libs/main/core/pistring.cpp
@@ -242,9 +242,9 @@ void PIString::appendFromChars(const char * c, int s, const char * codepage) {
 	} else {
 		pc = c;
 	}
-	size_t len = mbsrtowcs(NULL, &pc, 0, &state);
+	size_t len = mbsrtowcs(NULL, (const char**)&pc, 0, &state);
 	wchar_t wstr[len+1];
-	mbsrtowcs(&wstr[0], &pc, len+1, &state);
+	mbsrtowcs(&wstr[0], (const char**)&pc, len+1, &state);
 	enlarge(len);
 	for (size_t i=0; i<len; ++i) (*this)[old_sz+i] = wstr[i];
 //	//qDebug() << "FromChars done" << size();