diff --git a/src/blackcore/blackcore.pro b/src/blackcore/blackcore.pro
index 17b0449fb..9b8293600 100644
--- a/src/blackcore/blackcore.pro
+++ b/src/blackcore/blackcore.pro
@@ -28,7 +28,6 @@ HEADERS += $$PWD/audio/*.h
 HEADERS += $$PWD/context/*.h
 HEADERS += $$PWD/data/*.h
 HEADERS += $$PWD/db/*.h
-HEADERS += $$PWD/simulator/*.h
 HEADERS += $$PWD/vatsim/*.h
 
 SOURCES += *.cpp