diff --git a/ssl_openssl.pas b/ssl_openssl.pas
index 8fcfcaa..1f6d3bd 100644
--- a/ssl_openssl.pas
+++ b/ssl_openssl.pas
@@ -86,7 +86,7 @@ accepting of new connections!
   {$WARN IMPLICIT_STRING_CAST_LOSS OFF}
 {$ENDIF}
 
-unit ssl_openssl;
+unit ssl_openssl{$IFDEF SUPPORTS_DEPRECATED} deprecated{$IFDEF SUPPORTS_DEPRECATED_DETAILS} 'Use ssl_openssl3 with OpenSSL 3.0 instead'{$ENDIF}{$ENDIF};
 
 interface
 
diff --git a/ssl_openssl11.pas b/ssl_openssl11.pas
index 69e094b..53b3808 100644
--- a/ssl_openssl11.pas
+++ b/ssl_openssl11.pas
@@ -82,7 +82,7 @@ accepting of new connections!
   {$WARN IMPLICIT_STRING_CAST_LOSS OFF}
 {$ENDIF}
 
-unit ssl_openssl11;
+unit ssl_openssl11{$IFDEF SUPPORTS_DEPRECATED} deprecated{$IFDEF SUPPORTS_DEPRECATED_DETAILS} 'Use ssl_openssl3 with OpenSSL 3.0 instead'{$ENDIF}{$ENDIF};
 
 interface