diff --git a/StringsAndData/RtlInitUnicodeString.c b/StringsAndData/RtlInitUnicodeString.c
new file mode 100644
index 0000000..a5ba858
--- /dev/null
+++ b/StringsAndData/RtlInitUnicodeString.c
@@ -0,0 +1,18 @@
+VOID RtlInitUnicodeString(PUNICODE_STRING DestinationString, PCWSTR SourceString)
+{
+	SIZE_T DestSize;
+
+	if (SourceString)
+	{
+		DestSize = StringLengthW(SourceString) * sizeof(WCHAR);
+		DestinationString->Length = (USHORT)DestSize;
+		DestinationString->MaximumLength = (USHORT)DestSize + sizeof(WCHAR);
+	}
+	else
+	{
+		DestinationString->Length = 0;
+		DestinationString->MaximumLength = 0;
+	}
+
+	DestinationString->Buffer = (PWCHAR)SourceString;
+}
\ No newline at end of file