diff --git a/app/src/main/java/net/thauvin/erik/android/tesremoteprogrammer/util/Strings.kt b/app/src/main/java/net/thauvin/erik/android/tesremoteprogrammer/util/Strings.kt
index 1f85fc1..d74833d 100644
--- a/app/src/main/java/net/thauvin/erik/android/tesremoteprogrammer/util/Strings.kt
+++ b/app/src/main/java/net/thauvin/erik/android/tesremoteprogrammer/util/Strings.kt
@@ -32,11 +32,11 @@ fun String.isDigits(): Boolean {
 }
 
 fun String.isDKS(): Boolean {
-    return this.equals(Dtmf.DKS, true)
+    return equals(Dtmf.DKS, true)
 }
 
 fun String.isLinear(): Boolean {
-    return this.equals(Dtmf.LINEAR, true)
+    return equals(Dtmf.LINEAR, true)
 }
 
 fun String.replaceAll(replace: Array<Pair<String, String>>): String {