diff --git a/lib/hexdump.c b/lib/hexdump.c
index 06833d404398..e146b1bf73dc 100644
--- a/lib/hexdump.c
+++ b/lib/hexdump.c
@@ -264,7 +264,7 @@ void print_hex_dump(const char *level, const char *prefix_str, int prefix_type,
 {
 	const u8 *ptr = buf;
 	int i, linelen, remaining = len;
-	unsigned char linebuf[32 * 3 + 2 + 32 + 1];
+	unsigned char linebuf[32 * 3 + 2 + 32 + 1] = "";
 
 	if (rowsize != 16 && rowsize != 32)
 		rowsize = 16;