diff --git a/test/lazutils/testlconvencoding.pas b/test/lazutils/testlconvencoding.pas
index c576cbb18f..9e61b6c066 100644
--- a/test/lazutils/testlconvencoding.pas
+++ b/test/lazutils/testlconvencoding.pas
@@ -48,6 +48,7 @@ procedure TTestLConvEncoding.Test_CP_UTF8_CP;
 
 begin
   Test('ISO_8859_1',@ISO_8859_1ToUTF8,@UTF8ToISO_8859_1);
+  Test('ISO_8859_15',@ISO_8859_15ToUTF8,@UTF8ToISO_8859_15);
   Test('866',@CP866ToUTF8,@UTF8ToCP866);
   Test('1250',@CP1250ToUTF8,@UTF8ToCP1250);
   Test('1251',@CP1251ToUTF8,@UTF8ToCP1251);