diff --git a/Makefile.in b/Makefile.in
index f0a464f..fee2f31 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -48,12 +48,12 @@ INCLS = -I. @V_INCLS@
 DEFS = -DDEBUG @DEFS@ -DARPDIR=\"$(ARPDIR)\" -DPATH_SENDMAIL=\"$(SENDMAIL)\"
 
 # Standard CFLAGS
-CFLAGS = $(CCOPT) $(DEFS) $(INCLS)
+CFLAGS = $(CCOPT) $(DEFS) $(INCLS) -pie
 
 # Standard LIBS
-LIBS = @LIBS@
+LIBS = @LIBS@ -pie -Wl,-z,relro,-z,now
 # Standard LIBS without libpcap.a
-SLIBS = @LBL_LIBS@
+SLIBS = @LBL_LIBS@ -pie -Wl,-z,relro,-z,now
 
 INSTALL = @INSTALL@
 SENDMAIL = @V_SENDMAIL@