Fix include path for utf8 tests

diff --git a/t/TEST b/t/TEST
index 6fb6201..8f6882b 100755 (executable)
--- a/t/TEST
+++ b/t/TEST
@@ -189,7 +189,7 @@ sub _scan_test {
        }
     }
 
-    my $utf8 = $::with_utf8 ? '-I$lib -Mutf8' : '';
+    my $utf8 = $::with_utf8 ? "-I$lib -Mutf8" : '';
 
     my %options = (
        perl => $perl,