Index: applications/editors/josm/plugins/geochat/build.xml
===================================================================
--- applications/editors/josm/plugins/geochat/build.xml	(revision 35893)
+++ applications/editors/josm/plugins/geochat/build.xml	(revision 35978)
@@ -5,5 +5,5 @@
     <property name="commit.message" value="[josm_geochat] copypaste from keyboard, font size advanced parameters"/>
     <!-- enter the *lowest* JOSM version this plugin is currently compatible with -->
-    <property name="plugin.main.version" value="15389"/>
+    <property name="plugin.main.version" value="18494"/>
 
     <property name="plugin.author" value="Ilya Zverev"/>
Index: applications/editors/josm/plugins/geochat/src/geochat/ChatServerConnection.java
===================================================================
--- applications/editors/josm/plugins/geochat/src/geochat/ChatServerConnection.java	(revision 35893)
+++ applications/editors/josm/plugins/geochat/src/geochat/ChatServerConnection.java	(revision 35978)
@@ -19,4 +19,5 @@
 import javax.json.JsonObject;
 
+import org.openstreetmap.josm.data.coor.ILatLon;
 import org.openstreetmap.josm.data.coor.LatLon;
 import org.openstreetmap.josm.data.coor.conversion.DecimalDegreesCoordinateFormat;
@@ -349,5 +350,5 @@
             final boolean needReset;
             final boolean needFullReset = lastUserId != userId;
-            if (needFullReset || (lastPosition != null && pos.greatCircleDistance(lastPosition) > MAX_JUMP)) {
+            if (needFullReset || (lastPosition != null && pos.greatCircleDistance((ILatLon) lastPosition) > MAX_JUMP)) {
                 // reset messages
                 lastId = 0;