diff --git a/wear/src/main/java/info/nightscout/androidaps/complications/CobIobComplication.java b/wear/src/main/java/info/nightscout/androidaps/complications/CobIobComplication.java
deleted file mode 100644
index b50ebba72f..0000000000
--- a/wear/src/main/java/info/nightscout/androidaps/complications/CobIobComplication.java
+++ /dev/null
@@ -1,41 +0,0 @@
-package info.nightscout.androidaps.complications;
-
-import android.app.PendingIntent;
-import android.support.wearable.complications.ComplicationData;
-import android.support.wearable.complications.ComplicationText;
-
-import info.nightscout.androidaps.data.RawDisplayData;
-import info.nightscout.androidaps.interaction.utils.SmallestDoubleString;
-import info.nightscout.shared.logging.LTag;
-
-/*
- * Created by dlvoy on 2019-11-12
- */
-@SuppressWarnings("deprecation")
-public class CobIobComplication extends BaseComplicationProviderService {
-
-    public ComplicationData buildComplicationData(int dataType, RawDisplayData raw, PendingIntent complicationPendingIntent) {
-
-        ComplicationData complicationData = null;
-
-        if (dataType == ComplicationData.TYPE_SHORT_TEXT) {
-            final String cob = raw.getStatus().getCob();
-            final String iob = new SmallestDoubleString(raw.getStatus().getIobSum(), SmallestDoubleString.Units.USE).minimise(displayFormat.MAX_FIELD_LEN_SHORT);
-
-            final ComplicationData.Builder builder = new ComplicationData.Builder(ComplicationData.TYPE_SHORT_TEXT)
-                    .setShortText(ComplicationText.plainText(cob))
-                    .setShortTitle(ComplicationText.plainText(iob))
-                    .setTapAction(complicationPendingIntent);
-
-            complicationData = builder.build();
-        } else {
-            aapsLogger.warn(LTag.WEAR, "Unexpected complication type " + dataType);
-        }
-        return complicationData;
-    }
-
-    @Override
-    public String getProviderCanonicalName() {
-        return CobIobComplication.class.getCanonicalName();
-    }
-}
diff --git a/wear/src/main/java/info/nightscout/androidaps/complications/CobIobComplication.kt b/wear/src/main/java/info/nightscout/androidaps/complications/CobIobComplication.kt
new file mode 100644
index 0000000000..339f2fae85
--- /dev/null
+++ b/wear/src/main/java/info/nightscout/androidaps/complications/CobIobComplication.kt
@@ -0,0 +1,34 @@
+@file:Suppress("DEPRECATION")
+
+package info.nightscout.androidaps.complications
+
+import android.app.PendingIntent
+import android.support.wearable.complications.ComplicationData
+import android.support.wearable.complications.ComplicationText
+import info.nightscout.androidaps.data.RawDisplayData
+import info.nightscout.androidaps.interaction.utils.SmallestDoubleString
+import info.nightscout.shared.logging.LTag
+
+/*
+ * Created by dlvoy on 2019-11-12
+ */
+class CobIobComplication : BaseComplicationProviderService() {
+
+    override fun buildComplicationData(dataType: Int, raw: RawDisplayData, complicationPendingIntent: PendingIntent): ComplicationData? {
+        var complicationData: ComplicationData? = null
+        if (dataType == ComplicationData.TYPE_SHORT_TEXT) {
+            val cob = raw.status.cob
+            val iob = SmallestDoubleString(raw.status.iobSum, SmallestDoubleString.Units.USE).minimise(displayFormat.MAX_FIELD_LEN_SHORT)
+            val builder = ComplicationData.Builder(ComplicationData.TYPE_SHORT_TEXT)
+                .setShortText(ComplicationText.plainText(cob))
+                .setShortTitle(ComplicationText.plainText(iob))
+                .setTapAction(complicationPendingIntent)
+            complicationData = builder.build()
+        } else {
+            aapsLogger.warn(LTag.WEAR, "Unexpected complication type $dataType")
+        }
+        return complicationData
+    }
+
+    override fun getProviderCanonicalName(): String = CobIobComplication::class.java.canonicalName!!
+}
\ No newline at end of file