1 files changed, 1 insertions, 1 deletions
diff --git a/error.c b/error.c
index b9ec8427e6..7e4fb7be29 100644
--- a/error.c
+++ b/error.c
@@ -9,7 +9,7 @@
 
 **********************************************************************/
 
-#include "ruby/config.h"
+#include "ruby/3/config.h"
 
 #include <errno.h>
 #include <stdarg.h>