diff --git a/FU/DebugImpl.pm b/FU/DebugImpl.pm
index 48c6cf1..88e0bb5 100644
--- a/FU/DebugImpl.pm
+++ b/FU/DebugImpl.pm
@@ -146,7 +146,7 @@ my @sections = (
 
         # Convert binary params to text.
         # For queries with text_params, assume the params are already valid for the text format.
-        my @binparams = grep $_->{type} && !$_->{text}, map $_->{params}->@*, @$queries;
+        my @binparams = grep $_->{type} && !exists $_->{text}, map $_->{params}->@*, @$queries;
         my @arg = map +($_->{type}, $_->{bin}), @binparams;
         my @text;
         my $ok = !@arg || eval { @text = $FU::DB->bin2text(@arg); 1 };