diff --git a/lib/src/query.c b/lib/src/query.c
index 9065ec7e..a5ce8603 100644
--- a/lib/src/query.c
+++ b/lib/src/query.c
@@ -2,6 +2,7 @@
 #include "./alloc.h"
 #include "./array.h"
 #include "./bits.h"
+#include "./language.h"
 #include "./point.h"
 #include "./tree_cursor.h"
 #include "./unicode.h"