diff --git a/README.md b/README.md
index 29427d19876da4db7a6e93e02b18d900a77a100a..8b240de6bbf31badbe5c3993229ae274233f1054 100644
--- a/README.md
+++ b/README.md
@@ -85,14 +85,17 @@ The following steps were reproduced in that order on a fully updated Ubuntu 15.1
 ### Troubleshooting
 
 * On running maven: `Failed to read artifact descriptor for org.apache.maven.plugins:maven-resources-plugin:jar:2.3`
+
     ```bash
     sudo /var/lib/dpkg/info/ca-certificates-java.postinst configure
     ```
 * On running `npm install`
+
     ```bash
     sudo chown vipra.vipra -R ~/.npm
     ```
 * On running `bower install` with the error message `/usr/bin/env: node: No such file or directory`
+
     ```bash
     sudo ln -s /usr/bin/nodejs /usr/bin/node
     ```
diff --git a/vipra-cmd/src/main/java/de/vipra/cmd/lda/DTMAnalyzer.java b/vipra-cmd/src/main/java/de/vipra/cmd/lda/DTMAnalyzer.java
index 17bca671d55ea5a263efa8941797e1c394d933dd..7011d94b963e415516b503b6c68250bdd98fded6 100644
--- a/vipra-cmd/src/main/java/de/vipra/cmd/lda/DTMAnalyzer.java
+++ b/vipra-cmd/src/main/java/de/vipra/cmd/lda/DTMAnalyzer.java
@@ -262,8 +262,8 @@ public class DTMAnalyzer extends Analyzer {
 
 			int idxArticle = 0;
 			for (final String articleId : index) {
-				double[] topicDistribution = topicDistributions[idxArticle++];
-				double topicDistributionSum = ArrayUtils.sum(topicDistribution);
+				final double[] topicDistribution = topicDistributions[idxArticle++];
+				final double topicDistributionSum = ArrayUtils.sum(topicDistribution);
 
 				// create topic references
 				final List<TopicRef> newTopicRefs = new ArrayList<>(Constants.K_TOPICS);
diff --git a/vipra-util/src/main/java/de/vipra/util/ArrayUtils.java b/vipra-util/src/main/java/de/vipra/util/ArrayUtils.java
index 971bcfb24078764f801c7c924e274ed1c6aa75cd..b72fa206235e909ff7c150254ad498a433a59193 100644
--- a/vipra-util/src/main/java/de/vipra/util/ArrayUtils.java
+++ b/vipra-util/src/main/java/de/vipra/util/ArrayUtils.java
@@ -37,10 +37,10 @@ public class ArrayUtils {
 		return maximum;
 	}
 
-	public static double sum(double[] values) {
+	public static double sum(final double[] values) {
 		double result = 0;
-		for (int i = 0; i < values.length; i++)
-			result += values[i];
+		for (final double value : values)
+			result += value;
 		return result;
 	}
 
diff --git a/vipra-util/src/main/java/de/vipra/util/model/Sequence.java b/vipra-util/src/main/java/de/vipra/util/model/Sequence.java
index d81ad4583e3f51ec5939f2bb3d11e7ef7ec151d3..8ca43584ccbeeb4d63484da5991c91eeb710e362 100644
--- a/vipra-util/src/main/java/de/vipra/util/model/Sequence.java
+++ b/vipra-util/src/main/java/de/vipra/util/model/Sequence.java
@@ -46,7 +46,7 @@ public class Sequence implements Comparable<Sequence>, Serializable {
 		return relevance;
 	}
 
-	public void setRelevance(Double relevance) {
+	public void setRelevance(final Double relevance) {
 		this.relevance = relevance;
 	}