diff --git a/src/devices/file.c b/src/devices/file.c
index 1f8a4d4..8eab577 100644
--- a/src/devices/file.c
+++ b/src/devices/file.c
@@ -24,7 +24,7 @@ WITH REGARD TO THIS SOFTWARE.
 static FILE *f;
 static DIR *d;
 static int dir_fd;
-static char *current_filename;
+static char *current_filename = "";
 static enum { IDLE,
 	FILE_READ,
 	FILE_WRITE,