--- a/usr/Makefile
+++ b/usr/Makefile
@@ -69,9 +69,9 @@ iscsistart: $(ISCSI_LIB_SRCS) $(INITIATOR_SRCS) $(FW_BOOT_SRCS) \
 		iscsistart.o statics.o
 	$(CC) $(CFLAGS) $(LDFLAGS) $^ -o $@ -lrt $(ISCSI_LIB)
 clean:
-	rm -f *.o $(PROGRAMS) .depend $(LIBSYS)
+	$(RM) *.o $(PROGRAMS) .depend $(LIBSYS)
 
 depend:
-	gcc $(CFLAGS) -M `ls *.c` > .depend
+	$(CC) $(CFLAGS) -M `ls *.c` > .depend
 
 -include .depend
--- a/utils/Makefile
+++ b/utils/Makefile
@@ -10,9 +10,9 @@ iscsi-iname: md5.o iscsi-iname.o
 	$(CC) $(CFLAGS) $(LDFLAGS) $^ $(DBM_LIB) -o $@
 
 clean:
-	rm -f *.o $(PROGRAMS) .depend
+	$(RM) *.o $(PROGRAMS) .depend
 
 depend:
-	gcc $(CFLAGS) -M `ls *.c` > .depend
+	$(CC) $(CFLAGS) -M `ls *.c` > .depend
 
 -include .depend
--- a/utils/fwparam_ibft/Makefile
+++ b/utils/fwparam_ibft/Makefile
@@ -41,11 +41,11 @@ LDFLAGS += -L$(TOPDIR)/libopeniscsiusr -liscsiusr
 all: $(OBJS)
 
 clean:
-	rm -f *.o $(CLEANFILES) .depend
+	$(RM) *.o $(CLEANFILES) .depend
 
 $(OBJS): prom_parse.tab.h prom_parse.h fwparam_ibft.h
 
 depend:
-	gcc $(CFLAGS) -M `ls *.c` > .depend
+	$(CC) $(CFLAGS) -M `ls *.c` > .depend
 
 -include .depend
--- a/utils/sysdeps/Makefile
+++ b/utils/sysdeps/Makefile
@@ -8,9 +8,9 @@ SYSDEPS_OBJS=sysdeps.o
 all: $(SYSDEPS_OBJS)
 
 clean:
-	rm -f *.o .depend
+	$(RM) *.o .depend
 
 depend:
-	gcc $(CFLAGS) -M `ls *.c` > .depend
+	$(CC) $(CFLAGS) -M `ls *.c` > .depend
 
 -include .depend
-- 
2.16.2