diff --git a/iscsi-scst/Makefile b/iscsi-scst/Makefile
index 3b1d69809..2478852e1 100644
--- a/iscsi-scst/Makefile
+++ b/iscsi-scst/Makefile
@@ -11,6 +11,7 @@ SUBDIRS := $(shell pwd)
 SCST_INC_DIR := $(SUBDIRS)/../scst/include
 #SCST_DIR := $(SCST_INC_DIR)
 SCST_DIR := $(shell pwd)/../scst/src
+SBINDIR := /usr/local/sbin
 
 ifeq ($(KVER),)
   ifeq ($(KDIR),)
@@ -38,8 +39,8 @@ include/iscsi_scst_itf_ver.h: include/iscsi_scst.h
 	echo "\"`sha1sum include/iscsi_scst.h|awk '{printf $$1}'`\"" >>include/iscsi_scst_itf_ver.h
 
 install: all
-	@install -vD usr/iscsi-scstd $(DISTDIR)/usr/local/sbin/iscsi-scstd
-	@install -vD usr/iscsi-scst-adm $(DISTDIR)/usr/local/sbin/iscsi-scst-adm
+	@install -vD usr/iscsi-scstd $(DISTDIR)$(SBINDIR)/iscsi-scstd
+	@install -vD usr/iscsi-scst-adm $(DISTDIR)$(SBINDIR)/iscsi-scst-adm
 	if [ -f /etc/debian_version ]; then \
 		install -vD -m 755 etc/initd/initd.debian $(DISTDIR)/etc/init.d/iscsi-scst; \
 	elif [ -f /etc/redhat-release ]; then \
diff --git a/scst/src/Makefile b/scst/src/Makefile
index 665575420..ce3cd7729 100644
--- a/scst/src/Makefile
+++ b/scst/src/Makefile
@@ -106,11 +106,11 @@ uninstall:
 endif
 
 ifeq ($(KVER),)
-INSTALL_DIR := /lib/modules/$(shell uname -r)/extra
+INSTALL_DIR := $(DISTDIR)/lib/modules/$(shell uname -r)/extra
 else
-INSTALL_DIR := /lib/modules/$(KVER)/extra
+INSTALL_DIR := $(DISTDIR)/lib/modules/$(KVER)/extra
 endif
-INSTALL_DIR_H := /usr/local/include/scst
+INSTALL_DIR_H := $(DISTDIR)/usr/local/include/scst
 
 EXTRA_CFLAGS += -I$(SCST_INC_DIR) -Wextra -Wno-unused-parameter \
 		-Wno-missing-field-initializers
diff --git a/scstadmin/Makefile b/scstadmin/Makefile
index cc9c2fb46..f376ce7af 100644
--- a/scstadmin/Makefile
+++ b/scstadmin/Makefile
@@ -1,22 +1,25 @@
 MODULE_VERSION = 0.7.4
 TOOL = scstadmin
 
+SBINDIR := $(PREFIX)/usr/local/sbin
+INITDIR := $(PREFIX)/etc/init.d
+
 all: perl-module
 
 install:
 	$(MAKE) -C scst-$(MODULE_VERSION) install
-	install -m 755 $(TOOL) /usr/local/sbin
-	install -m 755 init.d/scst /etc/init.d
-	install -m 755 init.d/qla2x00t /etc/init.d
+	install -m 755 $(TOOL) $(DISTDIR)$(SBINDIR)
+	install -m 755 init.d/scst $(DISTDIR)$(INITDIR)
+	install -m 755 init.d/qla2x00t $(DISTDIR)$(INITDIR)
 	/usr/lib/lsb/install_initd scst
 	/usr/lib/lsb/install_initd qla2x00t
 
 uninstall:
 	-/usr/lib/lsb/remove_initd qla2x00t
 	-/usr/lib/lsb/remove_initd scst
-	-rm -f /etc/init.d/qla2x00t
-	-rm -f /etc/init.d/scst
-	-rm -f /usr/local/sbin/$(TOOL)
+	-rm -f $(DISTDIR)$(PATH_INITD)/qla2x00t
+	-rm -f $(DISTDIR)$(PATH_INITD)/scst
+	-rm -f $(DISTDIR)$(PATH_SBIN)/$(TOOL)
 	$(MAKE) -C scst-$(MODULE_VERSION) uninstall
 
 perl-module: