diff --git a/testcases/lib/i3test.pm b/testcases/lib/i3test.pm
index 591064c4..540e89bc 100644
--- a/testcases/lib/i3test.pm
+++ b/testcases/lib/i3test.pm
@@ -449,4 +449,14 @@ sub launch_with_config {
     return $pid;
 }
 
+package i3test::X11;
+use parent 'X11::XCB::Connection';
+
+sub input_focus {
+    my $self = shift;
+    i3test::sync_with_i3($self);
+
+    return $self->SUPER::input_focus(@_);
+}
+
 1
diff --git a/testcases/t/170-force_focus_wrapping.t b/testcases/t/170-force_focus_wrapping.t
index 48869c10..d2f15a65 100644
--- a/testcases/t/170-force_focus_wrapping.t
+++ b/testcases/t/170-force_focus_wrapping.t
@@ -6,18 +6,6 @@
 #
 use i3test;
 
-{
-    package i3test::X11;
-    use parent 'X11::XCB::Connection';
-
-    sub input_focus {
-        my $self = shift;
-        i3test::sync_with_i3($self);
-
-        return $self->SUPER::input_focus(@_);
-    }
-}
-
 my $x = i3test::X11->new;
 
 #####################################################################