1 files changed, 1 insertions, 0 deletions
diff --git a/src/tree.h b/src/tree.h
index 91051022..fad9387a 100644
--- a/src/tree.h
+++ b/src/tree.h
@@ -27,6 +27,7 @@ extern "C" {
 #endif
 
 #include <colm/colm.h>
+#include <colm/input.h>
 
 typedef unsigned char Code;
 typedef unsigned long Word;