diff --git a/src/main/java/de/monticore/od4data/_symboltable/OD4DataScopesGenitor.java b/src/main/java/de/monticore/od4data/_symboltable/OD4DataScopesGenitor.java
index 94a0423..f4be511 100644
--- a/src/main/java/de/monticore/od4data/_symboltable/OD4DataScopesGenitor.java
+++ b/src/main/java/de/monticore/od4data/_symboltable/OD4DataScopesGenitor.java
@@ -1,6 +1,7 @@
 /* (c) https://github.com/MontiCore/monticore */
 package de.monticore.od4data._symboltable;
 
+import com.google.common.base.Preconditions;
 import de.monticore.odbasis._ast.ASTODArtifact;
 import de.monticore.odbasis._symboltable.ODBasisScopesGenitor;
 import de.monticore.symboltable.ImportStatement;
@@ -18,7 +19,7 @@ public OD4DataScopesGenitor() {
 
   @Override
   public IOD4DataArtifactScope createFromAST(ASTODArtifact rootNode) {
-    Log.errorIfNull(rootNode,
+    Preconditions.checkNotNull(rootNode,
         "0xAE882 Error by creating of the OD4DataScopesGenitor symbol table: top ast node"
             + " is null");
     IOD4DataArtifactScope artifactScope = de.monticore.od4data.OD4DataMill.artifactScope();
diff --git a/src/main/java/de/monticore/od4development/_symboltable/OD4DevelopmentScopesGenitor.java b/src/main/java/de/monticore/od4development/_symboltable/OD4DevelopmentScopesGenitor.java
index 15cddcb..648ce1b 100644
--- a/src/main/java/de/monticore/od4development/_symboltable/OD4DevelopmentScopesGenitor.java
+++ b/src/main/java/de/monticore/od4development/_symboltable/OD4DevelopmentScopesGenitor.java
@@ -1,6 +1,7 @@
 /* (c) https://github.com/MontiCore/monticore */
 package de.monticore.od4development._symboltable;
 
+import com.google.common.base.Preconditions;
 import de.monticore.odbasis._ast.ASTODArtifact;
 import de.monticore.symboltable.ImportStatement;
 import de.se_rwth.commons.logging.Log;
@@ -10,7 +11,7 @@
 public class OD4DevelopmentScopesGenitor extends OD4DevelopmentScopesGenitorTOP {
 
   public IOD4DevelopmentArtifactScope createFromAST (ASTODArtifact rootNode) {
-    Log.errorIfNull(rootNode, "0xA7004x78995 Error by creating of the OD4DevelopmentScopesGenitor symbol table: top ast node is null");
+    Preconditions.checkNotNull(rootNode, "0xA7004x78995 Error by creating of the OD4DevelopmentScopesGenitor symbol table: top ast node is null");
     IOD4DevelopmentArtifactScope artifactScope = de.monticore.od4development.OD4DevelopmentMill.artifactScope();
     
     // set package
diff --git a/src/main/java/de/monticore/od4report/_symboltable/OD4ReportScopesGenitor.java b/src/main/java/de/monticore/od4report/_symboltable/OD4ReportScopesGenitor.java
index c36ce89..21da41f 100644
--- a/src/main/java/de/monticore/od4report/_symboltable/OD4ReportScopesGenitor.java
+++ b/src/main/java/de/monticore/od4report/_symboltable/OD4ReportScopesGenitor.java
@@ -1,6 +1,7 @@
 /* (c) https://github.com/MontiCore/monticore */
 package de.monticore.od4report._symboltable;
 
+import com.google.common.base.Preconditions;
 import de.monticore.od4report.OD4ReportMill;
 import de.monticore.od4report._ast.ASTODReportObject;
 import de.monticore.odbasis._ast.ASTODArtifact;
@@ -50,7 +51,7 @@ private VariableSymbolBuilder create_ODReportObject(ASTODReportObject astodRepor
 
   @Override
   public IOD4ReportArtifactScope createFromAST(ASTODArtifact rootNode) {
-    Log.errorIfNull(rootNode,
+    Preconditions.checkNotNull(rootNode,
         "0xAE881 Error by creating of the OD4ReportScopesGenitor symbol table: top ast node"
             + " is null");
     IOD4ReportArtifactScope artifactScope = de.monticore.od4report.OD4ReportMill.artifactScope();