diff --git a/src/ooxml/java/org/apache/poi/util/DocumentHelper.java b/src/ooxml/java/org/apache/poi/util/DocumentHelper.java
index 3b7d68ae5..1ec47953a 100644
--- a/src/ooxml/java/org/apache/poi/util/DocumentHelper.java
+++ b/src/ooxml/java/org/apache/poi/util/DocumentHelper.java
@@ -121,8 +121,8 @@ public final class DocumentHelper {
                 dbf.setAttribute("http://apache.org/xml/properties/security-manager", mgr);
                 // Stop once one can be setup without error
                 return;
-            } catch (Throwable t) {
-                logger.log(POILogger.WARN, "SAX Security Manager could not be setup", t);
+            } catch (Throwable e) {     // NOSONAR - also catch things like NoClassDefError here
+                logger.log(POILogger.WARN, "SAX Security Manager could not be setup", e);
             }
         }
     }
@@ -172,5 +172,4 @@ public final class DocumentHelper {
     public static void addNamespaceDeclaration(Element element, Namespace namespace) {
         addNamespaceDeclaration(element, namespace.getPrefix(), namespace.getNamespaceURI());
     }
-
 }
diff --git a/src/ooxml/java/org/apache/poi/util/SAXHelper.java b/src/ooxml/java/org/apache/poi/util/SAXHelper.java
index 1fbe744b0..6a957c299 100644
--- a/src/ooxml/java/org/apache/poi/util/SAXHelper.java
+++ b/src/ooxml/java/org/apache/poi/util/SAXHelper.java
@@ -88,10 +88,8 @@ public final class SAXHelper {
                 xmlReader.setProperty("http://apache.org/xml/properties/security-manager", mgr);
                 // Stop once one can be setup without error
                 return;
-            } catch (Exception e) {
+            } catch (Throwable e) {     // NOSONAR - also catch things like NoClassDefError here
                 logger.log(POILogger.WARN, "SAX Security Manager could not be setup", e);
-            } catch (Error err) {
-                logger.log(POILogger.WARN, "SAX Security Manager could not be setup", err);
             }
         }
     }