diff --git a/src/mod/applications/mod_fax/Makefile b/src/mod/applications/mod_fax/Makefile
index 3a19ceecc2..355e1ac68d 100644
--- a/src/mod/applications/mod_fax/Makefile
+++ b/src/mod/applications/mod_fax/Makefile
@@ -11,3 +11,11 @@ include $(BASE)/build/modmake.rules
 $(SPANDSP_LA): $(SPANDSP_DIR) $(SPANDSP_DIR)/.update
 	cd $(SPANDSP_DIR) && $(MAKE)
 	$(TOUCH_TARGET)
+
+
+depend_install: $(DESTDIR)$(libdir)/libspandsp.la
+
+$(DESTDIR)$(libdir)/libspandsp.la: $(SPANDSP_LA)
+	cd $(SPANDSP_DIR) && $(MAKE) install
+
+