diff --git a/third-party/pjproject/patches/config_site.h b/third-party/pjproject/patches/config_site.h
index 67e3451d0f116394f7b179fdd1bfcde2d5624951..9e897d58ed478aa0fe95c7a95fcc7688fe180848 100644
--- a/third-party/pjproject/patches/config_site.h
+++ b/third-party/pjproject/patches/config_site.h
@@ -79,3 +79,11 @@
 #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