diff --git a/subjects/printif/README.md b/subjects/printif/README.md
index da875f328..e6c72410b 100644
--- a/subjects/printif/README.md
+++ b/subjects/printif/README.md
@@ -39,7 +39,7 @@ And its output:
 ```console
 $ go run . | cat -e
 G$
-Invalid Output$
+Invalid Input$
 G$
-Invalid Output$
+Invalid Input$
 ```
diff --git a/subjects/printifnot/README.md b/subjects/printifnot/README.md
index 2ffb39bd4..7bb7ba6c5 100644
--- a/subjects/printifnot/README.md
+++ b/subjects/printifnot/README.md
@@ -37,8 +37,8 @@ And its output:
 
 ```console
 $ go run . | cat -e
-Invalid Output$
-Invalid Output$
+Invalid Input$
+Invalid Input$
 G$
 G$
 ```