diff --git a/hbase-server/src/main/java/org/apache/hadoop/hbase/filter/FilterList.java b/hbase-server/src/main/java/org/apache/hadoop/hbase/filter/FilterList.java
index 8e9c1c86851..e5e359796d7 100644
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/filter/FilterList.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/filter/FilterList.java
@@ -74,7 +74,11 @@ public class FilterList implements Filter {
    * @param rowFilters list of filters
    */
   public FilterList(final List<Filter> rowFilters) {
-    this.filters = rowFilters;
+    if (rowFilters instanceof ArrayList) {
+      this.filters = rowFilters;
+    } else {
+      this.filters = new ArrayList<Filter>(rowFilters);
+    }
   }
 
   /**
@@ -83,7 +87,7 @@ public class FilterList implements Filter {
    * @param rowFilters
    */
   public FilterList(final Filter... rowFilters) {
-    this.filters = Arrays.asList(rowFilters);
+    this.filters = new ArrayList<Filter>(Arrays.asList(rowFilters));
   }
 
   /**
@@ -102,7 +106,7 @@ public class FilterList implements Filter {
    * @param rowFilters Set of row filters.
    */
   public FilterList(final Operator operator, final List<Filter> rowFilters) {
-    this.filters = rowFilters;
+    this.filters = new ArrayList<Filter>(rowFilters);
     this.operator = operator;
   }
 
@@ -113,7 +117,7 @@ public class FilterList implements Filter {
    * @param rowFilters Filters to use
    */
   public FilterList(final Operator operator, final Filter... rowFilters) {
-    this.filters = Arrays.asList(rowFilters);
+    this.filters = new ArrayList<Filter>(Arrays.asList(rowFilters));
     this.operator = operator;
   }
 
diff --git a/hbase-server/src/test/java/org/apache/hadoop/hbase/filter/TestFilterList.java b/hbase-server/src/test/java/org/apache/hadoop/hbase/filter/TestFilterList.java
index 85948cb4486..196c0ca36dc 100644
--- a/hbase-server/src/test/java/org/apache/hadoop/hbase/filter/TestFilterList.java
+++ b/hbase-server/src/test/java/org/apache/hadoop/hbase/filter/TestFilterList.java
@@ -54,6 +54,27 @@ public class TestFilterList {
   static byte[] GOOD_BYTES = Bytes.toBytes("abc");
   static byte[] BAD_BYTES = Bytes.toBytes("def");
 
+
+  @Test
+  public void testAddFilter() throws Exception {
+    Filter filter1 = new RowFilter();
+    Filter filter2 = new RowFilter();
+
+    FilterList filterList = new FilterList(filter1, filter2);
+    filterList.addFilter(new RowFilter());
+
+    filterList = new FilterList(Arrays.asList(filter1, filter2));
+    filterList.addFilter(new RowFilter());
+
+    filterList = new FilterList(Operator.MUST_PASS_ALL, filter1, filter2);
+    filterList.addFilter(new RowFilter());
+
+    filterList = new FilterList(Operator.MUST_PASS_ALL, Arrays.asList(filter1, filter2));
+    filterList.addFilter(new RowFilter());
+
+  }
+
+
   /**
    * Test "must pass one"
    * @throws Exception