diff --git a/applets/taskmanager/package/contents/ui/MouseHandler.qml b/applets/taskmanager/package/contents/ui/MouseHandler.qml
--- a/applets/taskmanager/package/contents/ui/MouseHandler.qml
+++ b/applets/taskmanager/package/contents/ui/MouseHandler.qml
@@ -68,14 +68,9 @@
 
         //ignore anything that is neither internal to TaskManager or a URL list
         onDragEnter: {
-            if (event.mimeData.formats.indexOf("application/x-orgkdeplasmataskmanager_taskbuttonitem") >= 0) {
-                return;
-            }
-
-            if (event.mimeData.hasUrls) {
-                return;
+            if (event.mimeData.formats.indexOf("text/x-plasmoidservicename") >= 0) {
+                event.ignore();
             }
-            event.ignore();
         }
 
         onDragMove: {
@@ -126,16 +121,16 @@
         }
 
         onDrop: {
-            // Reject internal drops.
-            if (event.mimeData.formats.indexOf("application/x-orgkdeplasmataskmanager_taskbuttonitem") >= 0) {
+            // Reject plasmoid drops.
+            if (event.mimeData.formats.indexOf("text/x-plasmoidservicename") >= 0) {
+                event.ignore();
                 return;
             }
 
             if (event.mimeData.hasUrls) {
                 parent.urlsDropped(event.mimeData.urls);
                 return;
             }
-            event.ignore();
         }
 
         Timer {