1 files changed, 1 insertions, 1 deletions

diff --git a/Makefile b/Makefile
index 5808a3336c1..f218cb082eb 100644
--- a/Makefile
+++ b/Makefile
@@ -242,7 +242,7 @@ cscope: cscope.files
 export DOXY_DIR ?= $(WS_ROOT)/doxygen
 
 define make-doxy
-	@WS_ROOT="$(WS_ROOT)" BR="$(BR)" make -C $(DOXY_DIR) $@
+	@OS_ID="$(OS_ID)" WS_ROOT="$(WS_ROOT)" BR="$(BR)" make -C $(DOXY_DIR) $@
 endef
 
 .PHONY: bootstrap-doxygen doxygen wipe-doxygen