diff --git a/src/Application.cpp b/src/Application.cpp
index f6277f8afa..14f5a1bf7d 100644
--- a/src/Application.cpp
+++ b/src/Application.cpp
@@ -20,7 +20,6 @@
 
 #include "communication/ArcusCommunication.h" //To connect via Arcus to the front-end.
 #include "communication/CommandLine.h" //To use the command line to slice stuff.
-#include "plugins/slots.h"
 #include "progress/Progress.h"
 #include "utils/ThreadPool.h"
 #include "utils/string.h" //For stringcasecompare.