diff --git a/constants.i b/constants.i
index f040779..47224d2 100644
--- a/constants.i
+++ b/constants.i
@@ -36,4 +36,4 @@
 %constant int INT_EDGE_SETUP = 0;
 %constant int INT_EDGE_FALLING = 1;
 %constant int INT_EDGE_RISING = 2;
-%constant int INT_EDGE_BOTH = 3
+%constant int INT_EDGE_BOTH = 3;