diff --git a/plugins/chanbackup.c b/plugins/chanbackup.c
index b80859808..7f907e0c7 100644
--- a/plugins/chanbackup.c
+++ b/plugins/chanbackup.c
@@ -21,6 +21,8 @@
 #define HEADER_LEN crypto_secretstream_xchacha20poly1305_HEADERBYTES
 #define ABYTES crypto_secretstream_xchacha20poly1305_ABYTES
 
+#define FILENAME "emergency.recover"
+
 /* VERSION is the current version of the data encrypted in the file */
 #define VERSION ((u64)1)
 
@@ -111,7 +113,7 @@ static void maybe_create_new_scb(struct plugin *p,
 
 	/* Note that this is opened for write-only, even though the permissions
 	 * are set to read-only.  That's perfectly valid! */
-	int fd = open("emergency.recover", O_CREAT|O_EXCL|O_WRONLY, 0400);
+	int fd = open(FILENAME, O_CREAT|O_EXCL|O_WRONLY, 0400);
 	if (fd < 0) {
 		/* Don't do anything if the file already exists. */
 		if (errno == EEXIST)
@@ -120,7 +122,7 @@ static void maybe_create_new_scb(struct plugin *p,
 	}
 
 	/* Comes here only if the file haven't existed before */
-	unlink_noerr("emergency.recover");
+	unlink_noerr(FILENAME);
 
 	/* This couldn't give EEXIST because we call unlink_noerr("scb.tmp")
 	 * in INIT */
@@ -161,7 +163,7 @@ static void maybe_create_new_scb(struct plugin *p,
 	close(fd);
 
 	/* This will update the scb file */
-	rename("scb.tmp", "emergency.recover");
+	rename("scb.tmp", FILENAME);
 }
 
 
@@ -169,9 +171,9 @@ static void maybe_create_new_scb(struct plugin *p,
 static u8 *decrypt_scb(struct plugin *p)
 {
 	struct stat st;
-	int fd = open("emergency.recover", O_RDONLY);
+	int fd = open(FILENAME, O_RDONLY);
 
-	if (stat("emergency.recover", &st) != 0)
+	if (stat(FILENAME, &st) != 0)
 		plugin_err(p, "SCB file is corrupted!: %s",
                           strerror(errno));
 
@@ -315,7 +317,7 @@ static void update_scb(struct plugin *p, struct scb_chan **channels)
 	close(fd);
 
 	/* This will atomically replace the main file */
-	rename("scb.tmp", "emergency.recover");
+	rename("scb.tmp", FILENAME);
 }
 
 static struct command_result *after_staticbackup(struct command *cmd,