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-rw-r--r--rational.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/rational.c b/rational.c
index 00d71bf641..8dac978ca7 100644
--- a/rational.c
+++ b/rational.c
@@ -6,6 +6,7 @@
*/
#include "ruby.h"
+#include "internal.h"
#include <math.h>
#include <float.h>