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Diffstat (limited to 'ext/openssl/ossl.h')
-rw-r--r--ext/openssl/ossl.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/ext/openssl/ossl.h b/ext/openssl/ossl.h
index 2d921f37b15..d334ad74417 100644
--- a/ext/openssl/ossl.h
+++ b/ext/openssl/ossl.h
@@ -143,7 +143,7 @@ int ossl_verify_cb(int, X509_STORE_CTX *);
*/
extern VALUE dOSSL;
-#if defined(__GNUC__) || __STDC_VERSION__ >= 199901L
+#if defined(HAVE_VA_ARGS_MACRO)
#define OSSL_Debug(fmt, ...) do { \
if (dOSSL == Qtrue) { \
fprintf(stderr, "OSSL_DEBUG: "); \