diff --git a/third-party/pjproject/patches/config_site.h b/third-party/pjproject/patches/config_site.h
index 8f989699fb..7c0e3cb11b 100644
--- a/third-party/pjproject/patches/config_site.h
+++ b/third-party/pjproject/patches/config_site.h
@@ -76,3 +76,11 @@
 #define	PJMEDIA_MAX_SDP_BANDW   4
 #define	PJMEDIA_MAX_SDP_ATTR   (PJMEDIA_MAX_SDP_FMT*2 + 4)
 #define	PJMEDIA_MAX_SDP_MEDIA   16
+
+/*
+ * Turn off the periodic sending of CRLNCRLN.  Default is on (90 seconds),
+ * which conflicts with the global section's keep_alive_interval option in
+ * pjsip.conf.
+ */
+#define PJSIP_TCP_KEEP_ALIVE_INTERVAL	0
+#define PJSIP_TLS_KEEP_ALIVE_INTERVAL	0