diff --git a/src/Makefile.am b/src/Makefile.am
index bcf03901..8a73b972 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -205,4 +205,8 @@ LIBS += -lpcap
 endif
 
 AM_CFLAGS = -DCONFDIR=\"$(sysconfdir)\" -DLOCALSTATEDIR=\"$(localstatedir)\" -DSBINDIR=\"$(sbindir)\" -iquote. 
+if OPENBSD
+AM_CFLAGS += -fstack-protector-all
+endif
+
 #-fsanitize=address