diff --git a/src/de/superx/rest/EtlJobApi.java b/src/de/superx/rest/EtlJobApi.java
index 87385e9..83ec13e 100644
--- a/src/de/superx/rest/EtlJobApi.java
+++ b/src/de/superx/rest/EtlJobApi.java
@@ -189,9 +189,10 @@ public class EtlJobApi extends RestControllerBase {
         return jobDescriptionSource.getJobsForComponent(abbreviation);
     }
     
-    @RequestMapping(path="/job/writeJobsToDb", method = RequestMethod.POST)
-    public boolean writeJobsToDb() {
-        try {
+	@RequestMapping(path="/job/writeJobsToDb", method = RequestMethod.POST)
+	public boolean writeJobsToDb() {
+    	userService.checkAdminRights();
+    	try {
             List<ContainerNode> jobs = entityJobDescriptionSource.readJobs();
             for (ContainerNode containerNode : jobs) {
                 try {
diff --git a/src/de/superx/spring/service/EntityJobDescriptionSource.java b/src/de/superx/spring/service/EntityJobDescriptionSource.java
index 55e87e7..019a134 100644
--- a/src/de/superx/spring/service/EntityJobDescriptionSource.java
+++ b/src/de/superx/spring/service/EntityJobDescriptionSource.java
@@ -1005,15 +1005,18 @@ public class EntityJobDescriptionSource implements JobDescriptionSource {
     }
 
     @Override
-    public List<ContainerNode> readInstallJobs(List<String> components) {
-        logger.debug("Reading install jobs from file system");
-        List<ContainerNode> jobs = new ArrayList<>();
-        for (String componentAbbreviation : PathAndFileUtils.getModules()) {
-           jobs.add(getInstallUpgradeJob(componentAbbreviation)); 
-        }
-        logger.debug("Count of jobs: " + jobs.size());
-        return jobs;
-    }
+	public List<ContainerNode> readInstallJobs(List<String> components) {
+    	logger.debug("Reading install jobs from file system");
+    	List<ContainerNode> jobs = new ArrayList<>();
+    	for (String componentAbbreviation : PathAndFileUtils.getModules()) {
+        	ContainerNode job = getInstallUpgradeJob(componentAbbreviation);
+        	if (job != null) {
+            	jobs.add(job);
+        	}
+    	}
+    	logger.debug("Count of jobs: " + jobs.size());
+    	return jobs;
+	}
 
     public static ContainerNode getPreKernInstallJob() {
         ContainerNode root = createContainerNode("kern_pre_install", "kern_pre_install", Integer.valueOf(9));
diff --git a/src/de/superx/spring/service/JobAdapter.java b/src/de/superx/spring/service/JobAdapter.java
index 35f6c7e..f5beb7a 100644
--- a/src/de/superx/spring/service/JobAdapter.java
+++ b/src/de/superx/spring/service/JobAdapter.java
@@ -150,25 +150,31 @@ public class JobAdapter implements JobDescriptionSource {
         }
     }
 
-    public static List<ContainerNode> mergeJobsPreferringDatabase(
-            List<ContainerNode> jobsDatabase, 
-            List<ContainerNode> jobsFilesystem){
-
-        List<ContainerNode> result = new ArrayList<>(jobsDatabase);
-
-        for (ContainerNode jobFs : jobsFilesystem) {
-            boolean isJobInDatabase = false;
-            for (ContainerNode jobDb : jobsDatabase) {
-                if(jobDb.name.equals(jobFs.name)) {
-                   isJobInDatabase = true; 
-                   break;
-                }
-            }
-            if(!isJobInDatabase) {
-               result.add(jobFs); 
-            }
-        }
-        return result;
-        
-    }
+	public static List<ContainerNode> mergeJobsPreferringDatabase(
+        	List<ContainerNode> jobsDatabase,
+        	List<ContainerNode> jobsFilesystem) {
+	
+    	List<ContainerNode> result = new ArrayList<>(jobsDatabase);
+	
+    	for (ContainerNode jobFs : jobsFilesystem) {
+        	if (jobFs == null) {
+            	logger.warn("Skipping null job from filesystem");
+            	continue;
+        	}
+	
+        	boolean isJobInDatabase = false;
+        	for (ContainerNode jobDb : jobsDatabase) {
+            	if (jobDb != null && jobDb.name.equals(jobFs.name)) {
+                	isJobInDatabase = true;
+                	break;
+            	}
+        	}
+	
+        	if (!isJobInDatabase) {
+            	result.add(jobFs);
+        	}
+    	}
+	
+    	return result;
+	}
 }