diff --git a/silly-metrics/pom.xml b/silly-metrics/pom.xml
index 4ada9e5..1880cc1 100644
--- a/silly-metrics/pom.xml
+++ b/silly-metrics/pom.xml
@@ -15,6 +15,17 @@
 					<target>1.7</target>
 				</configuration>
 			</plugin>
+			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-jar-plugin</artifactId>
+				<configuration>
+					<archive>
+						<manifest>
+							<mainClass>silly.metrics.KeywordCounter</mainClass>
+						</manifest>
+					</archive>
+				</configuration>
+			</plugin>
 		</plugins>
 	</build>
-</project>
\ No newline at end of file
+</project>
diff --git a/silly-metrics/src/main/java/silly/metrics/KeywordCounter.java b/silly-metrics/src/main/java/silly/metrics/KeywordCounter.java
index 0b8d6a3..08da080 100644
--- a/silly-metrics/src/main/java/silly/metrics/KeywordCounter.java
+++ b/silly-metrics/src/main/java/silly/metrics/KeywordCounter.java
@@ -222,6 +222,7 @@ else if (file.getName().endsWith(".java")) {
             RandomAccessFile f = new RandomAccessFile(file, "r");
             byte[] contents = new byte[(int) f.length()];
             f.readFully(contents);
+            f.close();
             String content = new String(contents);
 
             char c;