diff --git a/src/core/Exception.pm6 b/src/core/Exception.pm6
index 9f45efbb333..d6dc68f40a0 100644
--- a/src/core/Exception.pm6
+++ b/src/core/Exception.pm6
@@ -380,7 +380,7 @@ do {
             # REMOVE DEPRECATED CODE ON 201907
             Rakudo::Deprecations.DEPRECATED: "PERL6_EXCEPTIONS_HANDLER", Nil,
                 '2019.07', :file("N/A"), :line("N/A"),
-                :what<RAKUDO_EXCEPTIONS_HANDLER env var>;
+                :what("RAKUDO_EXCEPTIONS_HANDLER env var");
             my $class := ::("Exceptions::$handler");
             unless nqp::istype($class,Failure) {
                 temp %*ENV<RAKUDO_EXCEPTIONS_HANDLER> = ""; # prevent looping