diff --git a/reactos/lib/rtl/i386/rtlmem.s b/reactos/lib/rtl/i386/rtlmem.s
index 3cc292c1d3a..76826af0861 100644
--- a/reactos/lib/rtl/i386/rtlmem.s
+++ b/reactos/lib/rtl/i386/rtlmem.s
@@ -249,7 +249,7 @@ DoMove:
 
 ByteMove:
     /* Move what's left */
-    rep stosb
+    rep movsb
 
 DoneMove:
     /* Restore volatiles */