diff --git a/exercises/practice/phone-number/phone-number.wat b/exercises/practice/phone-number/phone-number.wat
index e69de29..a9f6bf5 100644
--- a/exercises/practice/phone-number/phone-number.wat
+++ b/exercises/practice/phone-number/phone-number.wat
@@ -0,0 +1,15 @@
+(module
+  (memory (export "mem") 1)
+
+  ;;
+  ;; Clean up user-entered phone number
+  ;;
+  ;; @param {i32} textOffset - The offset of the input string in linear memory
+  ;; @param {i32} textLength - The length of the input string in linear memory
+  ;;
+  ;; @returns {(i32,i32)} - The offset and length of the clean phone number in linear memory
+  ;;
+  (func (export "clean") (param $textOffset i32) (param $textLength i32) (result i32 i32)
+    (return (local.get $textOffset) (local.get $textLength))
+  )
+)