diff --git a/Makefile b/Makefile
index 3fc3a155..dbcb249a 100644
--- a/Makefile
+++ b/Makefile
@@ -32,7 +32,8 @@ SUBDIRS=lib ip tc misc netem genl
 LIBNETLINK=../lib/libnetlink.a ../lib/libutil.a
 
 all: Config
-	@for i in $(SUBDIRS); \
+	@set -e; \
+	for i in $(SUBDIRS); \
 	do $(MAKE) $(MFLAGS) -C $$i; done
 
 Config:
diff --git a/tc/m_ipt.c b/tc/m_ipt.c
index e1f68b33..3d653391 100644
--- a/tc/m_ipt.c
+++ b/tc/m_ipt.c
@@ -36,24 +36,9 @@
 #include <fcntl.h>
 #include <sys/wait.h>
 
-const char *pname = "tc-ipt";
-const char *tname = "mangle";
-const char *pversion = "0.1";
-
-#ifndef TRUE
-#define TRUE 1
-#endif
-#ifndef FALSE
-#define FALSE 0
-#endif
-
-#ifndef IPT_LIB_DIR
-#define IPT_LIB_DIR "/usr/local/lib/iptables"
-#endif
-
-#ifndef PROC_SYS_MODPROBE
-#define PROC_SYS_MODPROBE "/proc/sys/kernel/modprobe"
-#endif
+static const char *pname = "tc-ipt";
+static const char *tname = "mangle";
+static const char *pversion = "0.1";
 
 static const char *ipthooks[] = {
 	"NF_IP_PRE_ROUTING",