diff --git a/resources/head.ui b/resources/head.ui
index c16ffaa..a9a7f39 100644
--- a/resources/head.ui
+++ b/resources/head.ui
@@ -8,11 +8,13 @@
     <property name="page_increment">10</property>
   </object>
   <object class="GtkAdjustment" id="pos_x_adjustment">
+    <property name="lower">-16383</property>
     <property name="upper">16383</property>
     <property name="step_increment">1</property>
     <property name="page_increment">10</property>
   </object>
   <object class="GtkAdjustment" id="pos_y_adjustment">
+    <property name="lower">-16383</property>
     <property name="upper">16383</property>
     <property name="step_increment">1</property>
     <property name="page_increment">10</property>