diff --git a/Makefile b/Makefile
index b4723b5..69ae8cd 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,7 @@
 SYSTEM_LIBRARY_SUBPATH:=compiled/native/$(shell racket -e '(display (path->string (system-library-subpath)))')
+SYSTEM_LIBRARY_SUFFIX:=$(shell racket -e '(begin (require dynext/file) (display (path->string (append-extension-suffix "DUMMY"))))' | sed -e s:DUMMY::)
 
-all: $(SYSTEM_LIBRARY_SUBPATH)/tty-raw-extension.so
+all: $(SYSTEM_LIBRARY_SUBPATH)/tty-raw-extension$(SYSTEM_LIBRARY_SUFFIX)
 
 clean:
 	rm -rf compiled
@@ -8,7 +9,7 @@ clean:
 $(SYSTEM_LIBRARY_SUBPATH):
 	mkdir -p $@
 
-$(SYSTEM_LIBRARY_SUBPATH)/%.so: %.c $(SYSTEM_LIBRARY_SUBPATH)
+$(SYSTEM_LIBRARY_SUBPATH)/%$(SYSTEM_LIBRARY_SUFFIX): %.c $(SYSTEM_LIBRARY_SUBPATH)
 	mzc --xform $*.c
 	mzc --3m --cc $*.3m.c
 	mzc --3m --ld $@ $*_3m.o