diff --git a/src/de/steamwar/sql/SchematicNode.java b/src/de/steamwar/sql/SchematicNode.java
index 0dadeb0..594b20a 100644
--- a/src/de/steamwar/sql/SchematicNode.java
+++ b/src/de/steamwar/sql/SchematicNode.java
@@ -55,7 +55,6 @@ public class SchematicNode {
 
     private static final SelectStatement<SchematicNode> byId = table.select(Table.PRIMARY);
     private static final SelectStatement<SchematicNode> byOwnerNameParent = table.select("OwnerNameParent");
-    private static final SelectStatement<SchematicNode> byOwnerNameParent_null = new SelectStatement<>(table, nodeSelectCreator("") + "WHERE NodeOwner = ? AND NodeName = ? AND ParentNode is NULL");
     private static final SelectStatement<SchematicNode> byParent = new SelectStatement<>(table, nodeSelectCreator("") + "WHERE ParentNode <=> ? ORDER BY NodeName");
     private static final SelectStatement<SchematicNode> dirsByParent = new SelectStatement<>(table, nodeSelectCreator("") + "WHERE ParentNode" + Statement.NULL_SAFE_EQUALS + "? AND NodeType is NULL ORDER BY NodeName");
     private static final SelectStatement<SchematicNode> byOwnerType = new SelectStatement<>(table, nodeSelectCreator("") + "WHERE NodeOwner = ? AND NodeType = ? ORDER BY NodeName");
@@ -130,13 +129,6 @@ public class SchematicNode {
         this.nodeFormat = nodeFormat;
     }
 
-    private static Integer nullOrNotNul(Integer i) {
-        if(i == null || i == 0) {
-            return null;
-        }
-        return i;
-    }
-
     public static List<SchematicNode> getAll(SteamwarUser user) {
         return all.listSelect(user);
     }
@@ -146,11 +138,11 @@ public class SchematicNode {
     }
 
     public static List<SchematicNode> list(SteamwarUser user, Integer schematicId) {
-        return list.listSelect(user, nullOrNotNul(schematicId));
+        return list.listSelect(user, schematicId);
     }
 
     public static SchematicNode byParentName(SteamwarUser user, Integer schematicId, String name) {
-        return byParentName.select(user, nullOrNotNul(schematicId), name);
+        return byParentName.select(user, schematicId, name);
     }
 
     public static List<SchematicNode> accessibleByUserType(SteamwarUser user, SchematicType type) {
@@ -166,7 +158,7 @@ public class SchematicNode {
     }
 
     public static List<SchematicNode> accessibleByUserTypeParent(SteamwarUser user, SchematicType type, Integer parentId) {
-        return accessibleByUserTypeInParent.listSelect(type, user, user, user, nullOrNotNul(parentId));
+        return accessibleByUserTypeInParent.listSelect(type, user, user, user, parentId);
     }
 
     public static SchematicNode byIdAndUser(SteamwarUser user, Integer id) {
@@ -205,8 +197,6 @@ public class SchematicNode {
     }
 
     public static SchematicNode getSchematicNode(int owner, String name, Integer parent) {
-        if (parent == null || parent == 0)
-            return byOwnerNameParent_null.select(owner, name);
         return byOwnerNameParent.select(owner, name, parent);
     }
 
@@ -215,18 +205,11 @@ public class SchematicNode {
     }
 
     public static List<SchematicNode> getSchematicNodeInNode(Integer parent) {
-        if(parent == null || parent == 0) {
-            rootWarning();
-        }
-
-        return byParent.listSelect(nullOrNotNul(parent));
+        return byParent.listSelect(parent);
     }
 
     public static List<SchematicNode> getSchematicDirectoryInNode(Integer parent) {
-        if(parent == null || parent == 0) {
-            rootWarning();
-        }
-        return dirsByParent.listSelect(nullOrNotNul(parent));
+        return dirsByParent.listSelect(parent);
     }
 
     @Deprecated
@@ -240,10 +223,7 @@ public class SchematicNode {
     }
 
     public static SchematicNode getSchematicNode(String name, Integer parent) {
-        if(parent == null || parent == 0) {
-            rootWarning();
-        }
-        return byParentName.select(name, nullOrNotNul(parent));
+        return byParentName.select(name, parent);
     }
 
     public static SchematicNode getSchematicNode(int id) {
@@ -588,10 +568,4 @@ public class SchematicNode {
         TAB_CACHE.computeIfAbsent(user.getId(), integer -> new HashMap<>()).putIfAbsent(cacheKey, list);
         return list;
     }
-
-    private static void rootWarning() {
-        ByteArrayOutputStream stacktraceOutput = new ByteArrayOutputStream();
-        new Throwable().printStackTrace(new PrintStream(stacktraceOutput));
-        SWException.log("PERFORMANCE!!! Getting all/weird subset of schematic nodes with parent NULL", stacktraceOutput.toString());
-    }
 }