diff --git a/libs/main/core/pistring.cpp b/libs/main/core/pistring.cpp
index c3317a02..c8edb2db 100644
--- a/libs/main/core/pistring.cpp
+++ b/libs/main/core/pistring.cpp
@@ -233,16 +233,16 @@ void PIString::appendFromChars(const char * c, int s, const char * codepage) {
 	std::mbstate_t state{};
 	PIChar c16;
 	int sz = 0;
-	while(std::size_t rc = std::mbrtoc16(&c16, c+sz, s - sz, &state)) {
+	while(std::size_t rc = std::mbrtoc16((char16_t*)&c16, c+sz, s - sz, &state)) {
 		if(rc == (std::size_t)-3)
-			d.append(c16);
+			append(c16);
 		else if(rc == (std::size_t)-2)
 			break;
 		else if(rc == (std::size_t)-1)
 			break;
 		else {
 			sz += rc;
-			d.append(c16);
+			append(c16);
 	}
 	}
 //	const char ** pc;