diff --git a/reactos/lib/rtl/unicode.c b/reactos/lib/rtl/unicode.c
index 217f695385c..995d889bd32 100644
--- a/reactos/lib/rtl/unicode.c
+++ b/reactos/lib/rtl/unicode.c
@@ -1919,7 +1919,7 @@ RtlCreateUnicodeString(
 
     if (UniDest->Buffer == NULL) return FALSE;
 
-    RtlMoveMemory(UniDest->Buffer, Source, Length);
+    RtlCopyMemory(UniDest->Buffer, Source, Length);
     UniDest->MaximumLength = (USHORT)Length;
     UniDest->Length = Length - sizeof (WCHAR);