diff --git a/android/uhabits-core/src/main/java/org/isoron/uhabits/core/models/HabitNotFoundException.java b/android/uhabits-core/src/main/java/org/isoron/uhabits/core/models/HabitNotFoundException.kt
similarity index 88%
rename from android/uhabits-core/src/main/java/org/isoron/uhabits/core/models/HabitNotFoundException.java
rename to android/uhabits-core/src/main/java/org/isoron/uhabits/core/models/HabitNotFoundException.kt
index 41e34ace8..37365ab4b 100644
--- a/android/uhabits-core/src/main/java/org/isoron/uhabits/core/models/HabitNotFoundException.java
+++ b/android/uhabits-core/src/main/java/org/isoron/uhabits/core/models/HabitNotFoundException.kt
@@ -16,8 +16,6 @@
  * You should have received a copy of the GNU General Public License along
  * with this program. If not, see <http://www.gnu.org/licenses/>.
  */
+package org.isoron.uhabits.core.models
 
-package org.isoron.uhabits.core.models;
-
-public class HabitNotFoundException extends RuntimeException {
-}
+class HabitNotFoundException : RuntimeException()
\ No newline at end of file