diff --git a/src/main/java/com/aparapi/examples/matrix/Main.java b/src/main/java/com/aparapi/examples/matrix/Main.java
index 74ee336120cd8642749d7aa47f28b9d7e09f46a1..70075076a33957596ce18bb487b45ac36866e0dd 100644
--- a/src/main/java/com/aparapi/examples/matrix/Main.java
+++ b/src/main/java/com/aparapi/examples/matrix/Main.java
@@ -26,6 +26,7 @@ package com.aparapi.examples.matrix;
 import com.aparapi.Kernel.EXECUTION_MODE;
 import org.apache.commons.lang3.tuple.ImmutablePair;
 import org.apache.commons.lang3.tuple.Pair;
+import org.apache.lucene.util.OpenBitSet;
 
 import java.io.File;
 import java.io.FileNotFoundException;