diff --git a/Instruction-Set.md b/Instruction-Set.md
index 1a87550..b78ef88 100644
--- a/Instruction-Set.md
+++ b/Instruction-Set.md
@@ -601,7 +601,7 @@ dest = ~dest
 ```py
 temp = destination
 destination = source
-source = destination
+source = temp
 ```
 
 ### ROR