diff --git a/config/intellij-idea-inspections.xml b/config/intellij-idea-inspections.xml
index 04ea9d6e7..09349c9d7 100644
--- a/config/intellij-idea-inspections.xml
+++ b/config/intellij-idea-inspections.xml
@@ -10,7 +10,7 @@
     </inspection_tool>
     <inspection_tool class="AbstractClassNeverImplemented" enabled="true" level="ERROR" enabled_by_default="true" />
     <inspection_tool class="AbstractClassWithOnlyOneDirectInheritor" enabled="false" level="ERROR" enabled_by_default="false" />
-    <inspection_tool class="AbstractClassWithoutAbstractMethods" enabled="false" level="ERROR" enabled_by_default="false" />
+    <inspection_tool class="AbstractClassWithoutAbstractMethods" enabled="true" level="ERROR" enabled_by_default="true" />
     <inspection_tool class="AbstractMethodCallInConstructor" enabled="true" level="ERROR" enabled_by_default="true" />
     <inspection_tool class="AbstractMethodOverridesAbstractMethod" enabled="true" level="ERROR" enabled_by_default="true" />
     <inspection_tool class="AbstractMethodOverridesConcreteMethod" enabled="true" level="ERROR" enabled_by_default="true" />
diff --git a/src/main/java/com/puppycrawl/tools/checkstyle/gui/AbstractCellEditor.java b/src/main/java/com/puppycrawl/tools/checkstyle/gui/BaseCellEditor.java
similarity index 98%
rename from src/main/java/com/puppycrawl/tools/checkstyle/gui/AbstractCellEditor.java
rename to src/main/java/com/puppycrawl/tools/checkstyle/gui/BaseCellEditor.java
index 4b089af17..79d604fe7 100644
--- a/src/main/java/com/puppycrawl/tools/checkstyle/gui/AbstractCellEditor.java
+++ b/src/main/java/com/puppycrawl/tools/checkstyle/gui/BaseCellEditor.java
@@ -37,7 +37,7 @@ import javax.swing.event.EventListenerList;
  *
  * @author Philip Milne
  */
-public abstract class AbstractCellEditor implements CellEditor {
+public class BaseCellEditor implements CellEditor {
 
     /**
      * A list of event listeners for the cell editor.
diff --git a/src/main/java/com/puppycrawl/tools/checkstyle/gui/JTreeTable.java b/src/main/java/com/puppycrawl/tools/checkstyle/gui/JTreeTable.java
index f608ed87f..27574c0af 100644
--- a/src/main/java/com/puppycrawl/tools/checkstyle/gui/JTreeTable.java
+++ b/src/main/java/com/puppycrawl/tools/checkstyle/gui/JTreeTable.java
@@ -194,7 +194,7 @@ public class JTreeTable extends JTable {
      * TreeTableCellEditor implementation. Component returned is the
      * JTree.
      */
-    private class TreeTableCellEditor extends AbstractCellEditor implements
+    private class TreeTableCellEditor extends BaseCellEditor implements
             TableCellEditor {
         @Override
         public Component getTableCellEditorComponent(JTable table,
diff --git a/src/test/java/com/puppycrawl/tools/checkstyle/BaseCheckTestSupport.java b/src/test/java/com/puppycrawl/tools/checkstyle/BaseCheckTestSupport.java
index 4e7c445ca..065d54154 100644
--- a/src/test/java/com/puppycrawl/tools/checkstyle/BaseCheckTestSupport.java
+++ b/src/test/java/com/puppycrawl/tools/checkstyle/BaseCheckTestSupport.java
@@ -20,7 +20,7 @@ import com.google.common.collect.Lists;
 import com.puppycrawl.tools.checkstyle.api.AuditEvent;
 import com.puppycrawl.tools.checkstyle.api.Configuration;
 
-public abstract class BaseCheckTestSupport {
+public class BaseCheckTestSupport {
     /**
      * A brief logger that only display info about errors.
      */