diff --git a/sdrgui/plugin/pluginmanager.cpp b/sdrgui/plugin/pluginmanager.cpp
index 2ba6324b2..4efe26d58 100644
--- a/sdrgui/plugin/pluginmanager.cpp
+++ b/sdrgui/plugin/pluginmanager.cpp
@@ -25,7 +25,6 @@
 #include "device/devicesourceapi.h"
 #include "device/devicesinkapi.h"
 #include "settings/preset.h"
-#include "gui/glspectrum.h"
 #include "util/message.h"
 #include "dsp/dspdevicesourceengine.h"
 #include "dsp/dspdevicesinkengine.h"