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-rw-r--r--internal/encoding.h6
1 files changed, 3 insertions, 3 deletions
diff --git a/internal/encoding.h b/internal/encoding.h
index cba9230950..a3b81bd388 100644
--- a/internal/encoding.h
+++ b/internal/encoding.h
@@ -12,9 +12,9 @@
#include "ruby/encoding.h" /* for rb_encoding */
#define rb_enc_autoload_p(enc) (!rb_enc_mbmaxlen(enc))
-#define rb_is_usascii_enc(enc) (enc) == rb_usascii_encoding()
-#define rb_is_ascii8bit_enc(enc) (enc) == rb_ascii8bit_encoding()
-#define rb_is_locale_enc(enc) (enc) == rb_locale_encoding()
+#define rb_is_usascii_enc(enc) ((enc) == rb_usascii_encoding())
+#define rb_is_ascii8bit_enc(enc) ((enc) == rb_ascii8bit_encoding())
+#define rb_is_locale_enc(enc) ((enc) == rb_locale_encoding())
/* encoding.c */
ID rb_id_encoding(void);