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-rw-r--r--encoding.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/encoding.c b/encoding.c
index d152d77321..95b2767911 100644
--- a/encoding.c
+++ b/encoding.c
@@ -11,6 +11,7 @@
#include "ruby/ruby.h"
#include "ruby/encoding.h"
+#include "internal.h"
#include "regenc.h"
#include <ctype.h>
#ifndef NO_LOCALE_CHARMAP