diff --git a/scstadmin/scstadmin.procfs/Makefile b/scstadmin/scstadmin.procfs/Makefile
index a81c18f26..5d7a4626f 100644
--- a/scstadmin/scstadmin.procfs/Makefile
+++ b/scstadmin/scstadmin.procfs/Makefile
@@ -5,12 +5,12 @@ endif
 MODULE_VERSION = 0.8.22
 TOOL = scstadmin
 
-SBINDIR := $(PREFIX)$(PREFIX)/sbin
+SBINDIR := $(PREFIX)/sbin
 
 all: perl-module
 
-install: all
-	$(MAKE) -C scst-$(MODULE_VERSION) install
+install install_vendor: all
+	$(MAKE) -C scst-$(MODULE_VERSION) $@ DESTDIR=$(DESTDIR)
 	install -d $(DESTDIR)$(SBINDIR)
 	install -m 755 $(TOOL) $(DESTDIR)$(SBINDIR)
 
@@ -23,6 +23,9 @@ perl-module:
 	perl Makefile.PL;
 	$(MAKE) -C scst-$(MODULE_VERSION)
 
+test:
+	$(MAKE) -C scst-$(MODULE_VERSION) test
+
 clean:
 	-$(MAKE) -C scst-$(MODULE_VERSION) clean