diff --git a/li.strolch.agent/src/main/java/li/strolch/runtime/configuration/RuntimeConfiguration.java b/li.strolch.agent/src/main/java/li/strolch/runtime/configuration/RuntimeConfiguration.java
index 6c82f9f9f..d0933609a 100644
--- a/li.strolch.agent/src/main/java/li/strolch/runtime/configuration/RuntimeConfiguration.java
+++ b/li.strolch.agent/src/main/java/li/strolch/runtime/configuration/RuntimeConfiguration.java
@@ -112,7 +112,7 @@ public class RuntimeConfiguration extends AbstractionConfiguration {
 	 */
 	public File getConfigFile(String context, String fileName, boolean checkExists) {
 		File configFile = new File(getDataPath(), fileName);
-		if (checkExists && !configFile.isFile() || !configFile.canRead()) {
+		if (checkExists && (!configFile.isFile() || !configFile.canRead())) {
 			String msg = "[{0}] requires config file which does not exist with name: {1}"; //$NON-NLS-1$
 			msg = MessageFormat.format(msg, getName(), context, fileName);
 			throw new StrolchConfigurationException(msg);
@@ -134,7 +134,7 @@ public class RuntimeConfiguration extends AbstractionConfiguration {
 	 */
 	public File getDataFile(String context, String fileName, boolean checkExists) {
 		File dataFile = new File(getDataPath(), fileName);
-		if (checkExists && !dataFile.isFile() || !dataFile.canRead()) {
+		if (checkExists && (!dataFile.isFile() || !dataFile.canRead())) {
 			String msg = "[{0}] requires data file which does not exist with name: {1}"; //$NON-NLS-1$
 			msg = MessageFormat.format(msg, getName(), context, fileName);
 			throw new StrolchConfigurationException(msg);
@@ -156,7 +156,7 @@ public class RuntimeConfiguration extends AbstractionConfiguration {
 	 */
 	public File getDataDir(String context, String dirName, boolean checkExists) {
 		File dataDir = new File(getDataPath(), dirName);
-		if (checkExists && !dataDir.isDirectory() || !dataDir.canRead()) {
+		if (checkExists && (!dataDir.isDirectory() || !dataDir.canRead())) {
 			String msg = "[{0}] requires data directory which does not exist with name: {1}"; //$NON-NLS-1$
 			msg = MessageFormat.format(msg, getName(), context, dirName);
 			throw new StrolchConfigurationException(msg);