diff --git a/src/rx/NTMakefile b/src/rx/NTMakefile
index 5ff7a7cd8f..1ae68cbc56 100644
--- a/src/rx/NTMakefile
+++ b/src/rx/NTMakefile
@@ -45,6 +45,7 @@ INCFILEDIR = $(DESTDIR)\include\rx
 
 INCFILES  = \
 	$(INCFILEDIR)\rx.h \
+	$(INCFILEDIR)\rx_atomic.h \
 	$(INCFILEDIR)\rx_packet.h \
 	$(INCFILEDIR)\rx_user.h \
 	$(INCFILEDIR)\rx_event.h \