Fix typo.
diff --git a/Python/ceval.c b/Python/ceval.c
index 677dfc2..e218d05 100644
--- a/Python/ceval.c
+++ b/Python/ceval.c
@@ -622,7 +622,7 @@
 	next opcode.
 
 	A successful prediction saves a trip through the eval-loop including
-	its two unpredictable branches, the HASARG test and the switch-case.
+	its two unpredictable branches, the HAS_ARG test and the switch-case.
 
         If collecting opcode statistics, turn off prediction so that
 	statistics are accurately maintained (the predictions bypass