diff --git a/Makefile b/Makefile
index 309b554..347b10d 100755
--- a/Makefile
+++ b/Makefile
@@ -4,7 +4,7 @@
 
 CC ?= gcc
 CFLAGS += -Wall -DHAVE_GETOPT_LONG -DUSE_SSL
-#CFLAGS += -DSETPROCTITLE
+CFLAGS += -DSETPROCTITLE
 LDFLAGS += -lssl
 BINDIR = /usr/local/bin
 INSTALLPATH = $(DESTDIR)/$(BINDIR)
diff --git a/setproctitle.c b/setproctitle.c
index 4d22a99..e6eccf3 100644
--- a/setproctitle.c
+++ b/setproctitle.c
@@ -164,7 +164,7 @@ initsetproctitle(argc, argv, envp)
 		if (p == NULL)
 			return -1;
 		environ[i] = strncpy(p, envp[i], len);
-		p[len - 1] = NULL;
+		p[len - 1] = (int)NULL;
 	}
 	environ[i] = NULL;