diff --git a/lib/OpenStack/MetaAPI/Roles/Listable.pm b/lib/OpenStack/MetaAPI/Roles/Listable.pm
index e26b1d7..0a32215 100644
--- a/lib/OpenStack/MetaAPI/Roles/Listable.pm
+++ b/lib/OpenStack/MetaAPI/Roles/Listable.pm
@@ -49,13 +49,13 @@ sub _list {
 
                     # can use a regexp as a filter
                     next
-                      unless $candidate->{$filter}
+                      unless defined $candidate->{$filter}
                       && $candidate->{$filter} =~ $opts{$filter};
                 } else {
 
                     # otherwise do one 'eq' check
                     next
-                      unless $candidate->{$filter}
+                      unless defined $candidate->{$filter}
                       && $candidate->{$filter} eq $opts{$filter};
                 }
 
diff --git a/t/listable-filter.t b/t/listable-filter.t
new file mode 100644
index 0000000..72b6e03
--- /dev/null
+++ b/t/listable-filter.t
@@ -0,0 +1,111 @@
+#!/usr/bin/env perl
+
+use strict;
+use warnings;
+
+use OpenStack::MetaAPI ();
+
+use Test2::Bundle::Extended;
+use Test2::Tools::Explain;
+use Test2::Plugin::NoWarnings;
+
+use FindBin;
+use lib "$FindBin::Bin/lib";
+
+use Test::OpenStack::MetaAPI qw{:all};
+use Test::OpenStack::MetaAPI::Auth qw{:all};
+
+use JSON;
+
+mock_lwp_useragent();
+
+my $api = get_api_object(use_env => 0);
+
+ok $api, "got one api object" or die;
+
+# Servers with falsy-but-valid field values
+my $servers_json = encode_json({
+    servers => [
+        {
+            id     => 'aaa11111-1111-1111-1111-111111111111',
+            name   => 'server-running',
+            status => 'ACTIVE',
+            'OS-EXT-STS:power_state' => 1,
+        },
+        {
+            id     => 'bbb22222-2222-2222-2222-222222222222',
+            name   => 'server-stopped',
+            status => 'SHUTOFF',
+            'OS-EXT-STS:power_state' => 0,
+        },
+        {
+            id     => 'ccc33333-3333-3333-3333-333333333333',
+            name   => 'server-nogroup',
+            status => 'ACTIVE',
+            'OS-EXT-STS:power_state' => 1,
+            'OS-EXT-SRV-ATTR:host' => '',
+        },
+    ],
+});
+
+mock_get_request(
+    'http://127.0.0.1:8774/v2.1/servers',
+    application_json($servers_json),
+);
+
+{
+    note "Filter by numeric zero value (power_state => 0)";
+
+    my $result = $api->servers('OS-EXT-STS:power_state' => 0);
+
+    is $result,
+      {
+        id     => 'bbb22222-2222-2222-2222-222222222222',
+        name   => 'server-stopped',
+        status => 'SHUTOFF',
+        'OS-EXT-STS:power_state' => 0,
+      },
+      "filtering by zero value returns the matching server";
+}
+
+{
+    note "Filter by empty string value (OS-EXT-SRV-ATTR:host => '')";
+
+    my $result = $api->servers('OS-EXT-SRV-ATTR:host' => '');
+
+    is $result,
+      {
+        id     => 'ccc33333-3333-3333-3333-333333333333',
+        name   => 'server-nogroup',
+        status => 'ACTIVE',
+        'OS-EXT-STS:power_state' => 1,
+        'OS-EXT-SRV-ATTR:host' => '',
+      },
+      "filtering by empty string value returns the matching server";
+}
+
+{
+    note "Filter by regex on field with zero value";
+
+    my $result = $api->servers('OS-EXT-STS:power_state' => qr/^0$/);
+
+    is $result,
+      {
+        id     => 'bbb22222-2222-2222-2222-222222222222',
+        name   => 'server-stopped',
+        status => 'SHUTOFF',
+        'OS-EXT-STS:power_state' => 0,
+      },
+      "regex filter matches zero value";
+}
+
+{
+    note "Filter by undef field still excludes (field not present)";
+
+    my @results = $api->servers('OS-EXT-SRV-ATTR:hypervisor_hostname' => 'some-host');
+
+    is \@results, [undef],
+      "filtering by field not present on entries returns no match";
+}
+
+done_testing;