1 files changed, 1 insertions, 0 deletions
diff --git a/typecheck.h b/typecheck.h
index 0468956e..295ac605 100644
--- a/typecheck.h
+++ b/typecheck.h
@@ -8,6 +8,7 @@
 #include <string.h>
 
 #include "ast.h"
+#include "environment.h"
 #include "types.h"
 
 type_t *parse_type_ast(env_t *env, type_ast_t *ast);