diff --git a/OSBindings/Qt/clksignal.pro b/OSBindings/Qt/clksignal.pro
index f3223980f..160673b94 100644
--- a/OSBindings/Qt/clksignal.pro
+++ b/OSBindings/Qt/clksignal.pro
@@ -72,8 +72,6 @@ SOURCES += \
 	$$SRC/Components/OPx/*.cpp \
 	$$SRC/Components/SN76489/*.cpp \
 	$$SRC/Components/Serial/*.cpp \
-\
-	$$SRC/Concurrency/*.cpp \
 \
 	$$SRC/Inputs/*.cpp \
 \