diff --git a/Core/src/org/sleuthkit/autopsy/modules/fileextmismatch/FileExtMismatchDetectorModuleSettings.java b/Core/src/org/sleuthkit/autopsy/modules/fileextmismatch/FileExtMismatchDetectorModuleSettings.java
index 45b097bda2..d1dc75a14e 100755
--- a/Core/src/org/sleuthkit/autopsy/modules/fileextmismatch/FileExtMismatchDetectorModuleSettings.java
+++ b/Core/src/org/sleuthkit/autopsy/modules/fileextmismatch/FileExtMismatchDetectorModuleSettings.java
@@ -18,6 +18,8 @@
  */
 package org.sleuthkit.autopsy.modules.fileextmismatch;
 
+import java.io.IOException;
+import java.io.ObjectInputStream;
 import org.sleuthkit.autopsy.ingest.IngestModuleIngestJobSettings;
 
 /**
@@ -26,11 +28,15 @@ import org.sleuthkit.autopsy.ingest.IngestModuleIngestJobSettings;
 final class FileExtMismatchDetectorModuleSettings implements IngestModuleIngestJobSettings {
 
     private static final long serialVersionUID = 1L;
-    private boolean skipFilesWithNoExtension = true;
-    private boolean skipFilesWithTextPlainMimeType = true;
-    private boolean skipKnownFiles = true;
+    private long versionNumber;
+    private boolean skipFilesWithNoExtension;
+    private boolean skipFilesWithTextPlainMimeType;
+    private boolean skipKnownFiles;
 
     FileExtMismatchDetectorModuleSettings() {
+        this.skipFilesWithNoExtension = true;
+        this.skipFilesWithTextPlainMimeType = true;
+        this.skipKnownFiles = true;
     }
 
     FileExtMismatchDetectorModuleSettings(boolean skipKnownFiles, boolean skipFilesWithNoExtension, boolean skipFilesWithTextPlainMimeType) {
@@ -44,33 +50,42 @@ final class FileExtMismatchDetectorModuleSettings implements IngestModuleIngestJ
         return serialVersionUID;
     }
 
-    void setSkipFilesWithNoExtension(boolean enabled) {
-        skipFilesWithNoExtension = enabled;
+    void setSkipFilesWithNoExtension(boolean skipFilesWithNoExtension) {
+        this.skipFilesWithNoExtension = skipFilesWithNoExtension;
     }
 
     boolean skipFilesWithNoExtension() {
         return skipFilesWithNoExtension;
     }
 
-    void setSkipFilesWithTextPlainMimeType(boolean enabled) {
-        skipFilesWithTextPlainMimeType = enabled;
+    void setSkipFilesWithTextPlainMimeType(boolean skipFilesWithTextPlainMimeType) {
+        this.skipFilesWithTextPlainMimeType = skipFilesWithTextPlainMimeType;
     }
 
     boolean skipFilesWithTextPlainMimeType() {
         return skipFilesWithTextPlainMimeType;
     }
 
-    /**
-     * @return the skipKnownFiles
-     */
-    boolean isSkipKnownFiles() {
+    boolean skipKnownFiles() {
         return skipKnownFiles;
     }
 
-    /**
-     * @param skipKnownFiles the skipKnownFiles to set
-     */
     void setSkipKnownFiles(boolean skipKnownFiles) {
         this.skipKnownFiles = skipKnownFiles;
     }
+
+    private void readObject(ObjectInputStream in) throws IOException, ClassNotFoundException {
+        in.defaultReadObject();
+        if (0L == versionNumber) {
+            /*
+             * If the version number is set to the default value of zero, then
+             * skipKnownFiles is a new field that has been initialized to the
+             * Java default boolean field value of false. Change this to the
+             * desired default value of true.
+             */
+            skipKnownFiles = true;
+        }
+        versionNumber = 1;
+    }
+
 }
diff --git a/Core/src/org/sleuthkit/autopsy/modules/fileextmismatch/FileExtMismatchIngestModule.java b/Core/src/org/sleuthkit/autopsy/modules/fileextmismatch/FileExtMismatchIngestModule.java
index 360b9152f6..a3b54e8d41 100644
--- a/Core/src/org/sleuthkit/autopsy/modules/fileextmismatch/FileExtMismatchIngestModule.java
+++ b/Core/src/org/sleuthkit/autopsy/modules/fileextmismatch/FileExtMismatchIngestModule.java
@@ -104,7 +104,7 @@ public class FileExtMismatchIngestModule implements FileIngestModule {
     @Override
     public ProcessResult process(AbstractFile abstractFile) {
         blackboard = Case.getCurrentCase().getServices().getBlackboard();
-        if(this.settings.isSkipKnownFiles() && (abstractFile.getKnown() == FileKnown.KNOWN)) {
+        if(this.settings.skipKnownFiles() && (abstractFile.getKnown() == FileKnown.KNOWN)) {
             return ProcessResult.OK;
         }
 
diff --git a/Core/src/org/sleuthkit/autopsy/modules/fileextmismatch/FileExtMismatchModuleSettingsPanel.java b/Core/src/org/sleuthkit/autopsy/modules/fileextmismatch/FileExtMismatchModuleSettingsPanel.java
index 86f03f9f9e..4ecde417ce 100644
--- a/Core/src/org/sleuthkit/autopsy/modules/fileextmismatch/FileExtMismatchModuleSettingsPanel.java
+++ b/Core/src/org/sleuthkit/autopsy/modules/fileextmismatch/FileExtMismatchModuleSettingsPanel.java
@@ -38,7 +38,7 @@ final class FileExtMismatchModuleSettingsPanel extends IngestModuleIngestJobSett
     private void customizeComponents() {
         skipNoExtCheckBox.setSelected(settings.skipFilesWithNoExtension());
         skipTextPlain.setSelected(settings.skipFilesWithTextPlainMimeType());
-        skipKnownFiles.setSelected(settings.isSkipKnownFiles());
+        skipKnownFiles.setSelected(settings.skipKnownFiles());
     }
 
     @Override