diff --git a/doc/optimization.txt b/doc/optimization.txt
index 5469adc8363b2abc2beabfbfcc747ba43cbda67a..1a03f37d832ec49718cc2be5a8e2f62b16785b89 100644
--- a/doc/optimization.txt
+++ b/doc/optimization.txt
@@ -157,7 +157,7 @@ Use asm loops like:
 __asm__(
     "1: ....
     ...
-    "jump_instruciton ....
+    "jump_instruction ....
 Do not use C loops:
 do{
     __asm__(