diff --git a/makefile b/makefile
index 06fa568d22a..9579bdf1a2f 100644
--- a/makefile
+++ b/makefile
@@ -95,6 +95,9 @@ endif
 ifeq ($(firstword $(filter Darwin,$(UNAME))),Darwin)
 TARGETOS = macosx
 endif
+ifeq ($(firstword $(filter Haiku,$(UNAME))),Haiku)
+TARGETOS = haiku
+endif
 
 ifndef TARGETOS
 $(error Unable to detect TARGETOS from uname -a: $(UNAME))