diff --git a/README.md b/README.md
index c722661..b08d640 100644
--- a/README.md
+++ b/README.md
@@ -12,7 +12,7 @@ Install and debug iPhone apps without using Xcode. Designed to work on unjailbro
 * `fruitstrap [-d] <app>`
 
 * Optional `-d` flag launches a remote GDB session after the app has been installed.
-* `<app>` must be an iPhone application bundle, *not* an IPSW.
+* `<app>` must be an iPhone application bundle, *not* an IPA.
 
 ## Demo