diff --git a/iped-app/src/main/java/iped/app/timelinegraph/cache/IndexTimeStampCache.java b/iped-app/src/main/java/iped/app/timelinegraph/cache/IndexTimeStampCache.java
index af4984922d..1a21a76da5 100644
--- a/iped-app/src/main/java/iped/app/timelinegraph/cache/IndexTimeStampCache.java
+++ b/iped-app/src/main/java/iped/app/timelinegraph/cache/IndexTimeStampCache.java
@@ -22,7 +22,7 @@
 
 import iped.app.timelinegraph.IpedChartsPanel;
 import iped.app.timelinegraph.TimeEventGroup;
-import iped.app.timelinegraph.cache.persistance.CachePersistance;
+import iped.app.timelinegraph.cache.persistance.CachePersistence;
 import iped.engine.core.Manager;
 import iped.viewers.api.IMultiSearchResultProvider;
 
@@ -71,7 +71,7 @@ public void run() {
                 periodClassesToCache.add(ipedChartsPanel.getTimePeriodClass());
             }
             for (Class periodClasses : periodClassesToCache) {
-                CachePersistance cp = CachePersistance.getInstance();
+                CachePersistence cp = CachePersistence.getInstance();
                 try {
                     TimeIndexedMap c = cp.loadNewCache(teGroup, periodClasses);
                     if (c != null) {
@@ -111,7 +111,7 @@ public void run() {
 
                         if (Manager.getInstance() != null && Manager.getInstance().isProcessingFinished()) {
                         }
-                        CachePersistance cp = CachePersistance.getInstance();
+                        CachePersistence cp = CachePersistence.getInstance();
                         cp.saveNewCache(this);
 
                         cacheLoaders.clear();
@@ -135,7 +135,7 @@ public void run() {
                 }
 
             } else {
-                CachePersistance cp = CachePersistance.getInstance();
+                CachePersistence cp = CachePersistence.getInstance();
                 for (Class periodClasses : periodClassesToCache) {
                     newCache.setIndexFile(teGroup, periodClasses.getSimpleName(), cp.getBaseDir());
                 }
diff --git a/iped-app/src/main/java/iped/app/timelinegraph/cache/PersistedArrayList.java b/iped-app/src/main/java/iped/app/timelinegraph/cache/PersistedArrayList.java
index 4563e89393..9a3de99c9f 100644
--- a/iped-app/src/main/java/iped/app/timelinegraph/cache/PersistedArrayList.java
+++ b/iped-app/src/main/java/iped/app/timelinegraph/cache/PersistedArrayList.java
@@ -16,8 +16,8 @@
 import org.apache.logging.log4j.Logger;
 import org.jfree.data.time.TimePeriod;
 
-import iped.app.timelinegraph.cache.persistance.CachePersistance;
-import iped.app.timelinegraph.cache.persistance.CachePersistance.CacheFileIterator;
+import iped.app.timelinegraph.cache.persistance.CachePersistence;
+import iped.app.timelinegraph.cache.persistance.CachePersistence.CacheFileIterator;
 import iped.app.timelinegraph.datasets.IpedTimelineDatasetManager;
 
 public class PersistedArrayList implements Set<CacheTimePeriodEntry> {
@@ -176,7 +176,7 @@ private void flush() {
 
         final int lflushCount = flushCount++;
 
-        CachePersistance cp = CachePersistance.getInstance();
+        CachePersistence cp = CachePersistence.getInstance();
         Future f = cp.cachePersistanceExecutor.submit(new Runnable() {
             @Override
             public void run() {
@@ -201,7 +201,7 @@ public void run() {
     }
 
     public void removeFlushes() {
-        CachePersistance.getInstance().cachePersistanceExecutor.execute(new Runnable() {
+        CachePersistence.getInstance().cachePersistanceExecutor.execute(new Runnable() {
             @Override
             public void run() {
                 for (File f : flushFiles) {
diff --git a/iped-app/src/main/java/iped/app/timelinegraph/cache/TimeIndexedMap.java b/iped-app/src/main/java/iped/app/timelinegraph/cache/TimeIndexedMap.java
index bfeb6fee26..786577d59e 100644
--- a/iped-app/src/main/java/iped/app/timelinegraph/cache/TimeIndexedMap.java
+++ b/iped-app/src/main/java/iped/app/timelinegraph/cache/TimeIndexedMap.java
@@ -15,7 +15,7 @@
 import org.apache.pdfbox.io.RandomAccessBufferedFileInputStream;
 
 import iped.app.timelinegraph.TimeEventGroup;
-import iped.app.timelinegraph.cache.persistance.CachePersistance;
+import iped.app.timelinegraph.cache.persistance.CachePersistence;
 
 /**
  * @author Patrick Dalla Bernardina
@@ -171,7 +171,7 @@ class ResultIterator implements Iterator<CacheTimePeriodEntry> {
         private String className;
         boolean useCache = false;
         private TimelineCache timelineCache;
-        CachePersistance cp = CachePersistance.getInstance();
+        CachePersistence cp = CachePersistence.getInstance();
         int countRead = 0;// counters to log number of cache reads
         int countCache = 0;// counters to log number of disk reads
         private Reference<CacheTimePeriodEntry>[] lsoftcache;// soft reference cache (a more complete cache but with SoftReferences)
@@ -271,7 +271,7 @@ public CacheTimePeriodEntry next() {
     };
 
     public void createOrLoadUpperPeriodIndex(IndexTimeStampCache indexTimeStampCache) {
-        CachePersistance cp = CachePersistance.getInstance();
+        CachePersistence cp = CachePersistence.getInstance();
         if (upperPeriodIndex.size() == 0) {
             TimelineCache timelineCache = TimelineCache.get(indexTimeStampCache.getTimeEventGroup());
             for (Iterator iterator = indexTimeStampCache.getPeriodClassesToCache().iterator(); iterator.hasNext();) {
diff --git a/iped-app/src/main/java/iped/app/timelinegraph/cache/persistance/CachePersistance.java b/iped-app/src/main/java/iped/app/timelinegraph/cache/persistance/CachePersistence.java
similarity index 98%
rename from iped-app/src/main/java/iped/app/timelinegraph/cache/persistance/CachePersistance.java
rename to iped-app/src/main/java/iped/app/timelinegraph/cache/persistance/CachePersistence.java
index a382952fe1..fcad00a1c0 100644
--- a/iped-app/src/main/java/iped/app/timelinegraph/cache/persistance/CachePersistance.java
+++ b/iped-app/src/main/java/iped/app/timelinegraph/cache/persistance/CachePersistence.java
@@ -44,10 +44,10 @@
 import iped.utils.IOUtil;
 
 /*
- * Class implementing method for timeline chart cache persistance
+ * Class implementing method for timeline chart cache persistence
  */
 
-public class CachePersistance {
+public class CachePersistence {
     File baseDir;
 
     HashMap<String, String> pathsToCheck = new HashMap<String, String>();
@@ -60,17 +60,17 @@ public class CachePersistance {
 
     static private boolean bitstreamSerializeAsDefault = true;
 
-    static CachePersistance singleton = new CachePersistance();
+    static CachePersistence singleton = new CachePersistence();
 
     static final String TIMECACHE_BASE_FOLDER = "timecachegroups";
 
-    public static CachePersistance getInstance() {
+    public static CachePersistence getInstance() {
         return singleton;
     }
 
     static public ExecutorService cachePersistanceExecutor = Executors.newFixedThreadPool(1);
 
-    public CachePersistance() {
+    public CachePersistence() {
         File startDir;
         if (App.get().appCase.getAtomicSources().size() == 1) {
             // single case
diff --git a/iped-app/src/main/java/iped/app/timelinegraph/datasets/IpedTimelineDataset.java b/iped-app/src/main/java/iped/app/timelinegraph/datasets/IpedTimelineDataset.java
index f4b89c416c..063941da22 100644
--- a/iped-app/src/main/java/iped/app/timelinegraph/datasets/IpedTimelineDataset.java
+++ b/iped-app/src/main/java/iped/app/timelinegraph/datasets/IpedTimelineDataset.java
@@ -52,7 +52,7 @@
 import iped.app.timelinegraph.cache.EventTimestampCache;
 import iped.app.timelinegraph.cache.TimeIndexedMap;
 import iped.app.timelinegraph.cache.TimeStampCache;
-import iped.app.timelinegraph.cache.persistance.CachePersistance;
+import iped.app.timelinegraph.cache.persistance.CachePersistence;
 import iped.app.ui.App;
 import iped.app.ui.CaseSearcherFilter;
 import iped.app.ui.Messages;
@@ -1197,7 +1197,7 @@ public void run() {
             t.start();
         }
 
-        CachePersistance cp = new CachePersistance();
+        CachePersistence cp = new CachePersistence();
 
         public void addValue(Count count, TimePeriod t, String eventType) {
             if (min == null || t.getStart().before(min.getStart())) {