diff --git a/openbox/config.c b/openbox/config.c
index 673af4bd..e1954a79 100644
--- a/openbox/config.c
+++ b/openbox/config.c
@@ -675,6 +675,11 @@ static void parse_resize(ObParseInst *i, xmlDocPtr doc, xmlNodePtr node,
                 if ((n2 = parse_find_node("y", n->children)))
                     config_parse_gravity_coord(doc, n2,
                                                &config_resize_popup_fixed.y);
+
+                config_resize_popup_fixed.x.pos =
+                    MAX(config_resize_popup_fixed.x.pos, 0);
+                config_resize_popup_fixed.y.pos =
+                    MAX(config_resize_popup_fixed.y.pos, 0);
             }
         }
     }
diff --git a/openbox/geom.h b/openbox/geom.h
index bdcd3c55..7c5ee32e 100644
--- a/openbox/geom.h
+++ b/openbox/geom.h
@@ -23,7 +23,7 @@
 #include <glib.h>
 
 typedef struct _GravityCoord {
-    int pos;
+    gint pos;
     gboolean center;
     gboolean opposite;
 } GravityCoord;