diff --git a/nfq/nfqws.c b/nfq/nfqws.c
index bec9b4e..32443e7 100644
--- a/nfq/nfqws.c
+++ b/nfq/nfqws.c
@@ -982,7 +982,8 @@ bool parse_tlspos(const char *s, enum tlspos *pos)
 	return true;
 }
 
-static void config_from_file(const char *filename)
+// no static to not allow optimizer to inline this func (save stack)
+void config_from_file(const char *filename)
 {
 	// config from a file
 	char buf[MAX_CONFIG_FILE_SIZE];
diff --git a/tpws/tpws.c b/tpws/tpws.c
index 27d04c9..322e680 100644
--- a/tpws/tpws.c
+++ b/tpws/tpws.c
@@ -364,7 +364,8 @@ static bool parse_pf_list(char *opt, struct port_filters_head *pfl)
 	return true;
 }
 
-static void config_from_file(const char *filename)
+// no static to not allow optimizer to inline this func (save stack)
+void config_from_file(const char *filename)
 {
 	// config from a file
 	char buf[MAX_CONFIG_FILE_SIZE];