diff --git a/libavutil/aes.c b/libavutil/aes.c
index 1697e9ecc9..7b453d8e73 100644
--- a/libavutil/aes.c
+++ b/libavutil/aes.c
@@ -28,8 +28,8 @@ typedef struct AVAES{
     int rounds;
 }AVAES;
 
-static const uint8_t rcon[11] = {
-  0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c
+static const uint8_t rcon[10] = {
+  0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36
 };
 
 static uint8_t     sbox[256];