diff --git a/doc/fbchkdoc/readme.txt b/doc/fbchkdoc/readme.txt
index 494b3d810..18e98c569 100644
--- a/doc/fbchkdoc/readme.txt
+++ b/doc/fbchkdoc/readme.txt
@@ -175,12 +175,12 @@ the '-ini FILE' command line option to any of the tools.
         are given.  Set or override this url with the '-url URL' command
         line option
 
-    web_cert_file
+    web_certificate
         path and file name to the certificate for web url.  Selected when the
         '-web' or '-web+' command line option given.  Set or override this
         option with the '-certificate FILE' command line option.
 
-    dev_cert_file
+    dev_certificate
         path and file name to the certificate for dev url.  Selected when the
         '-dev' or '-dev+' command line option given.  Set or override this
         option with the '-certificate FILE' command line option.
diff --git a/doc/libfbdoc/CHttpStream.bas b/doc/libfbdoc/CHttpStream.bas
index d89cf998e..bb0aac2a1 100644
--- a/doc/libfbdoc/CHttpStream.bas
+++ b/doc/libfbdoc/CHttpStream.bas
@@ -164,6 +164,8 @@ namespace fb
 
 		if( ca_file ) then
 			ret = curl_easy_setopt( curl, CURLOPT_CAINFO, ca_file )
+		else
+			curl_easy_setopt( curl, CURLOPT_SSL_OPTIONS, CURLSSLOPT_NATIVE_CA )
 		end if
 
 		'' This option should not be needed.  It wasn't in earlier version
@@ -302,6 +304,8 @@ namespace fb
 
 		if( ca_file ) then
 			curl_easy_setopt( curl, CURLOPT_CAINFO, ca_file )
+		else
+			curl_easy_setopt( curl, CURLOPT_SSL_OPTIONS, CURLSSLOPT_NATIVE_CA )
 		end if
 
 		ret = curl_easy_perform( curl )