diff --git a/README.md b/README.md
index 796c4d9..c4301e9 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # checkpw
 
-checkpw is a program to check the validity of a users password on a Linux/PAM-based system.
+checkpw is a program that checks the validity of a users password on a Linux/PAM-based system.
 
 # Installation:
 
diff --git a/checkpw.c b/checkpw.c
index 36b9164..d55586c 100644
--- a/checkpw.c
+++ b/checkpw.c
@@ -1,5 +1,5 @@
 /*
- * checkpw is a program to check the validity of a users password on a
+ * checkpw is a program that checks the validity of a users password on a
  * Linux/PAM-based system.
  *
  * Usage: checkpw -u $USER -p $PASSWORD
diff --git a/checkpw_interactive.c b/checkpw_interactive.c
index b42155b..273770d 100644
--- a/checkpw_interactive.c
+++ b/checkpw_interactive.c
@@ -1,5 +1,5 @@
 /*
- * checkpw is a program to check the validity of a users password on a
+ * checkpw is a program that checks the validity of a users password on a
  * Linux/PAM-based system.
  *
  * Usage: checkpw