1 files changed, 1 insertions, 1 deletions
diff --git a/bignum.c b/bignum.c
index 77d9b57225..956673ac29 100644
--- a/bignum.c
+++ b/bignum.c
@@ -9,7 +9,7 @@
 
 **********************************************************************/
 
-#include "ruby/impl/config.h"
+#include "ruby/internal/config.h"
 
 #include <ctype.h>
 #include <float.h>