diff --git a/src/charConv.c b/src/charConv.c
index 636a1e066..cb8db75c2 100644
--- a/src/charConv.c
+++ b/src/charConv.c
@@ -57,7 +57,7 @@ char * convStrDup(char * string) {
 	size_t inleft = strlen(string);
 	char * ret;
 	size_t outleft;
-	int retlen = 0;
+	size_t retlen = 0;
 	size_t err;
 	char * bufferPtr;
 
@@ -76,7 +76,7 @@ char * convStrDup(char * string) {
 		}
 
 		ret = realloc(ret,retlen+BUFFER_SIZE-outleft+1);
-		strncpy(&(ret[retlen]),buffer,BUFFER_SIZE-outleft);
+		memcpy(&(ret[retlen]),buffer,BUFFER_SIZE-outleft);
 		retlen+=BUFFER_SIZE-outleft;
 		ret[retlen] = '\0';
 	}