diff --git a/tp/tp2/src/lib/spn.c b/tp/tp2/src/lib/spn.c
index 4f5346e..707fca8 100644
--- a/tp/tp2/src/lib/spn.c
+++ b/tp/tp2/src/lib/spn.c
@@ -38,7 +38,7 @@ unsigned char do_subst(unsigned char w,unsigned char subst[16])
 
 unsigned char encrypt(
 		unsigned char w, 
-		unsigned  key,
+		unsigned  int key,
 		unsigned char perm[8],
 		unsigned char subst[16])
 {
@@ -52,7 +52,7 @@ unsigned char encrypt(
 }
 unsigned char decrypt(
 		unsigned char w, 
-		unsigned short key,
+		unsigned int key,
 		unsigned char perm[8],
 		unsigned char subst[16])
 {