diff --git a/app/src/main/kotlin/com/simplemobiletools/calendar/extensions/Int.kt b/app/src/main/kotlin/com/simplemobiletools/calendar/extensions/Int.kt
index 149e2631f..dbfc8db27 100644
--- a/app/src/main/kotlin/com/simplemobiletools/calendar/extensions/Int.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/calendar/extensions/Int.kt
@@ -1,4 +1,4 @@
 package com.simplemobiletools.calendar.extensions
 
 // TODO: how to do "flags & ~flag" in kotlin?
-fun Int.removeFlag(flag: Int) = this - (if (this and flag != 0) flag else 0)
+fun Int.removeFlag(flag: Int) = this or flag - flag