diff --git a/.idea/inspectionProfiles/Project_Default.xml b/.idea/inspectionProfiles/Project_Default.xml
index f2a91e180..a06a9416e 100644
--- a/.idea/inspectionProfiles/Project_Default.xml
+++ b/.idea/inspectionProfiles/Project_Default.xml
@@ -7,6 +7,7 @@
       <option name="m_ignoreCatchBlocksWithComments" value="false" />
       <option name="m_ignoreNonEmptyCatchBlock" value="false" />
     </inspection_tool>
+    <inspection_tool class="ClassInitializer" enabled="true" level="WARNING" enabled_by_default="true" />
     <inspection_tool class="ConstantValue" enabled="true" level="WARNING" enabled_by_default="true">
       <option name="DONT_REPORT_TRUE_ASSERT_STATEMENTS" value="true" />
       <option name="IGNORE_ASSERT_STATEMENTS" value="true" />
diff --git a/flying-saucer-core/src/main/java/org/xhtmlrenderer/context/ContentFunctionFactory.java b/flying-saucer-core/src/main/java/org/xhtmlrenderer/context/ContentFunctionFactory.java
index 8714bc209..37516e65d 100644
--- a/flying-saucer-core/src/main/java/org/xhtmlrenderer/context/ContentFunctionFactory.java
+++ b/flying-saucer-core/src/main/java/org/xhtmlrenderer/context/ContentFunctionFactory.java
@@ -39,7 +39,7 @@
 public class ContentFunctionFactory {
     private final List<ContentFunction> _functions = new ArrayList<>();
 
-    {
+    public ContentFunctionFactory() {
         _functions.add(new PageCounterFunction());
         _functions.add(new PagesCounterFunction());
         _functions.add(new TargetCounterFunction());