1 files changed, 1 insertions, 1 deletions
diff --git a/cv.h b/cv.h
index 9f2594a19f..7e60be7e1a 100644
--- a/cv.h
+++ b/cv.h
@@ -153,7 +153,7 @@ Returns the stash of the CV.
 #define CvWEAKOUTSIDE_on(cv)	(CvFLAGS(cv) |= CVf_WEAKOUTSIDE)
 #define CvWEAKOUTSIDE_off(cv)	(CvFLAGS(cv) &= ~CVf_WEAKOUTSIDE)
 
-
+#define CvISXSUB(cv)		(CvXSUB(cv) ? TRUE : FALSE)
 /*
 =head1 CV reference counts and CvOUTSIDE