diff --git a/UPDATE_PROGRAM.s b/UPDATE_PROGRAM.s
index e3f83d8..3b86857 100644
--- a/UPDATE_PROGRAM.s
+++ b/UPDATE_PROGRAM.s
@@ -44,7 +44,7 @@
 # FUNCT. DESCR.:	P27 (THE UPDATE PROGRAM) PROCESSES COMMANDS AND DATA
 #			INSERTIONS REQUESTED BY THE GROUND VIA UPLINK.
 #			THE P27 PROGRAM WILL ACCEPT UPDATES
-#			ONLY DURING P00 FOR THE LM, AND ONLY DURINT P00,
+#			ONLY DURING P00 FOR THE LM, AND ONLY DURING P00,
 #			P02, AND FRESH START FOR THE CSM.
 #
 # CALLING SEQ:		PROGRAM IS INITIATED BY UPLINK ENTRY OF VERBS 70, 71, 72, AND 73.