diff --git a/Makefile b/Makefile
index 3e06b8aa..4f8aded3 100644
--- a/Makefile
+++ b/Makefile
@@ -46,9 +46,11 @@ examples: lib
 install: build
 	@printf "  INSTALL headers\n"
 	$(Q)$(INSTALL) -d $(INCDIR)/libopenstm32
+	$(Q)$(INSTALL) -d $(INCDIR)/usb
 	$(Q)$(INSTALL) -d $(LIBDIR)
 	$(Q)$(INSTALL) -m 0644 include/libopenstm32.h $(INCDIR)
 	$(Q)$(INSTALL) -m 0644 include/libopenstm32/*.h $(INCDIR)/libopenstm32
+	$(Q)$(INSTALL) -m 0644 include/usb/*.h $(INCDIR)/usb
 	@printf "  INSTALL lib\n"
 	$(Q)$(INSTALL) -m 0644 lib/*.a $(LIBDIR)
 	@printf "  INSTALL ldscript\n"