src/crypto/x509/root_cgo_darwin.go | 2 +-

diff --git a/src/crypto/x509/root_cgo_darwin.go b/src/crypto/x509/root_cgo_darwin.go
index a168135a334770fba7c6370316308c9c9726fe70..e6332072d62a50d89398bd4d3677fb9f02efc4aa 100644
--- a/src/crypto/x509/root_cgo_darwin.go
+++ b/src/crypto/x509/root_cgo_darwin.go
@@ -215,7 +215,7 @@ 					CFIndex length = CFStringGetLength(summary);
 					CFIndex maxSize = CFStringGetMaximumSizeForEncoding(length, kCFStringEncodingUTF8) + 1;
 					char *buffer = malloc(maxSize);
 					if (CFStringGetCString(summary, buffer, maxSize, kCFStringEncodingUTF8)) {
-						printf("crypto/x509: %s returned %d\n", buffer, result);
+						printf("crypto/x509: %s returned %d\n", buffer, (int)result);
 					}
 					free(buffer);
 					CFRelease(summary);