diff --git a/src/msgb.c b/src/msgb.c
index 940135f..4edbdf3 100644
--- a/src/msgb.c
+++ b/src/msgb.c
@@ -511,7 +511,7 @@
  */
 const char *msgb_hexdump(const struct msgb *msg)
 {
-	static char buf[4100];
+	static __thread char buf[4100];
 	return msgb_hexdump_buf(buf, sizeof(buf), msg);
 }