diff --git a/ext/PerlIO/encoding/t/nolooping.t b/ext/PerlIO/encoding/t/nolooping.t
index c86cd0f240c4..f3436ad9e976 100644
--- a/ext/PerlIO/encoding/t/nolooping.t
+++ b/ext/PerlIO/encoding/t/nolooping.t
@@ -2,9 +2,15 @@
 
 use Test::More tests => 1;
 
+BEGIN {
+    $SIG{__WARN__} = sub { $warn .= $_[0] };
+}
+
 # bug #41442
 use PerlIO::encoding;
 use open ':locale';
-if (-e '/dev/null') { open STDERR, '>', '/dev/null' }
-warn "# \x{201e}\n"; # „
+if ($warn !~ /Cannot find encoding/) {
+    if (-e '/dev/null') { open STDERR, '>', '/dev/null' }
+    warn "# \x{201e}\n"; # „
+}
 ok(1); # we got that far