1 files changed, 2 insertions, 0 deletions

diff --git a/src/ARC4.c b/src/ARC4.c
index 28dc4a3..a125fab 100644
--- a/src/ARC4.c
+++ b/src/ARC4.c
@@ -26,6 +26,8 @@
  *
  */
 
+#include "pycrypto_common.h"
+
 #define MODULE_NAME _ARC4
 #define BLOCK_SIZE 1
 #define KEY_SIZE 0