diff --git a/shape.c b/shape.c
index 3311d4d681..0b019a51ac 100644
--- a/shape.c
+++ b/shape.c
@@ -4,10 +4,10 @@
 #include "symbol.h"
 #include "id_table.h"
 #include "internal/class.h"
+#include "internal/error.h"
 #include "internal/gc.h"
 #include "internal/symbol.h"
 #include "internal/variable.h"
-#include "internal/error.h"
 #include "variable.h"
 #include <stdbool.h>