diff --git a/crypto/bio/bss_bio.c b/crypto/bio/bss_bio.c
index 32afea95a..d836e3bc3 100644
--- a/crypto/bio/bss_bio.c
+++ b/crypto/bio/bss_bio.c
@@ -29,7 +29,7 @@
 # undef SSIZE_MAX
 # define SSIZE_MAX INT_MAX
 #elif !defined(SSIZE_MAX)
-# define SSIZE_MAX _INT_MAX
+# define SSIZE_MAX INT_MAX
 #endif
 
 static int bio_new(BIO *bio);