diff --git a/isa/07/09.md b/isa/07/09.md
index 146eab4eb..acc2867cc 100644
--- a/isa/07/09.md
+++ b/isa/07/09.md
@@ -1,3 +1,3 @@
-# What does Yahweh tell Ahaz will happen if his faith isn't firm?
+# What does Yahweh tell Ahaz will happen if his faith is not firm?
 
 Ahaz will not remain secure unless his faith is firm. 
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