diff --git a/subjects/rotatevowels/README.md b/subjects/rotatevowels/README.md
index db8d2968..09552f3a 100644
--- a/subjects/rotatevowels/README.md
+++ b/subjects/rotatevowels/README.md
@@ -4,7 +4,7 @@
 
 Write a **program** that checks the arguments for vowels.
 
-- If the arguments contains vowels (for this exercise `y` is not considered a vowel) the program has to **"mirror"** the position of the vowels in the arguments (see the examples).
+- If the arguments contain vowels (for this exercise `y` is not considered a vowel) the program has to **"mirror"** the position of the vowels in the arguments (see the examples).
 - If the number of arguments is less than 1, the program displays a new line ("`\n`").
 - If the arguments do not have any vowels, the program just prints the arguments.