diff --git a/sdk/lib/rtl/i386/rtlmem.s b/sdk/lib/rtl/i386/rtlmem.s
index eb93f89d230..2843480f89e 100644
--- a/sdk/lib/rtl/i386/rtlmem.s
+++ b/sdk/lib/rtl/i386/rtlmem.s
@@ -14,6 +14,7 @@ PUBLIC _RtlCompareMemory@12
 PUBLIC _RtlCompareMemoryUlong@12
 PUBLIC _RtlFillMemory@12
 PUBLIC _RtlFillMemoryUlong@12
+PUBLIC _RtlFillMemoryUlonglong@16
 PUBLIC _RtlMoveMemory@12
 PUBLIC _RtlZeroMemory@8