diff --git a/cloudpg/src/main/java/io/clouditor/graph/passes/LabelExtractionPass.kt b/cloudpg/src/main/java/io/clouditor/graph/passes/LabelExtractionPass.kt
index 5d21294..705bdcb 100644
--- a/cloudpg/src/main/java/io/clouditor/graph/passes/LabelExtractionPass.kt
+++ b/cloudpg/src/main/java/io/clouditor/graph/passes/LabelExtractionPass.kt
@@ -160,10 +160,10 @@ class LabelExtractionPass(ctx: TranslationContext) : TranslationResultPass(ctx)
             )
 
         regexes.entries.forEach { it ->
-            val matches = it.key.findAll(nodeWComment.comment!!)
-            if (matches.toList().isNotEmpty()) {
-                val labels = it.value(nodeWComment, matches)
-                labels.forEach {
+            val matches = nodeWComment.comment?.let { it1 -> it.key.findAll(it1) }
+            if (matches?.toList()?.isNotEmpty() == true) {
+                val labels = matches?.let { it1 -> it.value(nodeWComment, it1) }
+                labels?.forEach {
                     t += it // Adding Labels to the supplementary nodes of a translation unit
                 }
             }
diff --git a/cloudpg/src/main/java/io/clouditor/graph/passes/golang/GolangHttpPass.kt b/cloudpg/src/main/java/io/clouditor/graph/passes/golang/GolangHttpPass.kt
index 43afc45..d88c48b 100644
--- a/cloudpg/src/main/java/io/clouditor/graph/passes/golang/GolangHttpPass.kt
+++ b/cloudpg/src/main/java/io/clouditor/graph/passes/golang/GolangHttpPass.kt
@@ -7,6 +7,7 @@ import de.fraunhofer.aisec.cpg.graph.Node
 import de.fraunhofer.aisec.cpg.graph.declarations.FunctionDeclaration
 import de.fraunhofer.aisec.cpg.graph.declarations.TranslationUnitDeclaration
 import de.fraunhofer.aisec.cpg.graph.declarations.VariableDeclaration
+import de.fraunhofer.aisec.cpg.graph.firstAssignment
 import de.fraunhofer.aisec.cpg.graph.statements.expressions.*
 import de.fraunhofer.aisec.cpg.graph.types.PointerType
 import de.fraunhofer.aisec.cpg.passes.SymbolResolver
@@ -95,10 +96,8 @@ class GolangHttpPass(ctx: TranslationContext) : HttpClientPass(ctx) {
     ) {
         // check initializers for http.NewServeMux()
         // actually check for return types - but that does not work (yet) with the standard library
-
-        if (r.initializer is CallExpression &&
-                (r.initializer as CallExpression).name.toString() == "http.NewServeMux"
-        ) {
+        val initializer = r.firstAssignment
+        if (initializer is CallExpression && initializer.name.toString() == "http.NewServeMux") {
             val app = result.findApplicationByTU(tu)
 
             val requestHandler = HttpRequestHandler(app, mutableListOf(), "/")
diff --git a/cloudpg/src/main/java/io/clouditor/graph/passes/golang/GolangLogPass.kt b/cloudpg/src/main/java/io/clouditor/graph/passes/golang/GolangLogPass.kt
index e392dc5..c1b0e30 100644
--- a/cloudpg/src/main/java/io/clouditor/graph/passes/golang/GolangLogPass.kt
+++ b/cloudpg/src/main/java/io/clouditor/graph/passes/golang/GolangLogPass.kt
@@ -7,6 +7,7 @@ import de.fraunhofer.aisec.cpg.graph.declarations.TranslationUnitDeclaration
 import de.fraunhofer.aisec.cpg.graph.statements.expressions.CallExpression
 import de.fraunhofer.aisec.cpg.graph.statements.expressions.MemberCallExpression
 import de.fraunhofer.aisec.cpg.passes.GoExtraPass
+import de.fraunhofer.aisec.cpg.passes.SymbolResolver
 import de.fraunhofer.aisec.cpg.passes.order.DependsOn
 import de.fraunhofer.aisec.cpg.processing.IVisitor
 import de.fraunhofer.aisec.cpg.processing.strategy.Strategy
@@ -14,6 +15,7 @@ import io.clouditor.graph.passes.LogPass
 import kotlin.streams.toList
 
 @DependsOn(GoExtraPass::class)
+@DependsOn(SymbolResolver::class)
 class GolangLogPass(ctx: TranslationContext) : LogPass(ctx) {
     override fun accept(result: TranslationResult) {
         val translationUnits =
diff --git a/cloudpg/src/main/java/io/clouditor/graph/testing/LocalTestingPass.kt b/cloudpg/src/main/java/io/clouditor/graph/testing/LocalTestingPass.kt
index a8510a7..9c6cc29 100644
--- a/cloudpg/src/main/java/io/clouditor/graph/testing/LocalTestingPass.kt
+++ b/cloudpg/src/main/java/io/clouditor/graph/testing/LocalTestingPass.kt
@@ -49,8 +49,7 @@ class LocalTestingPass(ctx: TranslationContext) : TranslationResultPass(ctx) {
     }
 
     private fun handleConf(conf: TestConfig, t: TranslationResult) {
-        val controllers =
-            t.additionalNodes.filter { it is HttpRequestHandler }.map { it as HttpRequestHandler }
+        val controllers = t.additionalNodes.filterIsInstance<HttpRequestHandler>()
 
         for (service in conf.services) {
             if (service.type == "server" || service.type == "third-party") {