diff --git a/Supporters/lib/Supporters.pm b/Supporters/lib/Supporters.pm
index 5e0ef5c..cace8d4 100644
--- a/Supporters/lib/Supporters.pm
+++ b/Supporters/lib/Supporters.pm
@@ -2006,7 +2006,7 @@ sub _readLedgerData($) {
         $type = 'Monthly';
       }
     }
-    die "Unknown type $type for $entityId from $line" if $type !~ /^(Monthly|Annual)$/ and defined $self->{programTypeSearch};
+    die "Unknown type \"$type\" for $entityId from $line" if $type !~ /^(Monthly|Annual)$/ and defined $self->{programTypeSearch};
     $amount =~ s/,//; $amount = abs($amount);
     if (defined $amountTable{$entityId}{donations}{$date}) {
       $amountTable{$entityId}{donations}{$date} += $amount;