diff --git a/yang-lsp/io.typefox.yang/src/main/java/io/typefox/yang/processor/YangProcessor.java b/yang-lsp/io.typefox.yang/src/main/java/io/typefox/yang/processor/YangProcessor.java
index 38141d4c..23fb698f 100644
--- a/yang-lsp/io.typefox.yang/src/main/java/io/typefox/yang/processor/YangProcessor.java
+++ b/yang-lsp/io.typefox.yang/src/main/java/io/typefox/yang/processor/YangProcessor.java
@@ -2,6 +2,7 @@
 
 import static com.google.common.collect.Lists.newArrayList;
 
+import java.util.ArrayList;
 import java.util.List;
 
 import org.eclipse.emf.common.notify.Adapter;
@@ -93,14 +94,18 @@ protected ProcessedDataModel processInternal(List<AbstractModule> modules, List<
 		var evalCtx = new FeatureEvaluationContext(includedFeatures, excludedFeatures);
 		ProcessedDataModel processedModel = new ProcessedDataModel();
 		collectResourceErrors(modules.get(0), processedModel);
-
+		List<Deviate> deviations = new ArrayList<>();
+		List<Augment> augments = new ArrayList<>();
 		modules.forEach((module) -> module.eAllContents().forEachRemaining((ele) -> {
 			if (ele instanceof Deviate) {
-				processDeviate((Deviate) ele, module, processedModel);
+				deviations.add((Deviate) ele);
 			} else if (ele instanceof Augment) {
-				processAugment((Augment) ele, module, evalCtx);
+				augments.add((Augment) ele);
 			}
 		}));
+		
+		deviations.forEach(dev -> processDeviate(dev, processedModel));
+		augments.forEach(augm -> processAugment(augm, evalCtx));
 
 		modules.forEach((module) -> {
 			String prefix = null;
@@ -128,11 +133,13 @@ private void collectResourceErrors(AbstractModule entryModule, ProcessedDataMode
 	 * min-elements, must, type, unique, units. Properties 'must' and 'unique' are
 	 * 0..n
 	 */
-	protected void processDeviate(Deviate deviate, AbstractModule module, ProcessedDataModel processedModel) {
+	protected void processDeviate(Deviate deviate, ProcessedDataModel processedModel) {
+		var moduleFileName = moduleFileName(deviate);
 		var deviation = (Deviation) deviate.eContainer();
 		SchemaNode targetNode = deviation.getReference().getSchemaNode();
+
 		if (targetNode == null || targetNode.eIsProxy()) {
-			processedModel.addProcessorError(moduleFileName(module), deviation.getReference(),
+			processedModel.addProcessorError(moduleFileName, deviation.getReference(),
 					"Deviation target node not found");
 			return;
 		}
@@ -147,7 +154,7 @@ protected void processDeviate(Deviate deviate, AbstractModule module, ProcessedD
 							.filter(child -> child.eClass() == statement.eClass()).findFirst();
 					if (existingProperty.isPresent()) {
 						error = true;
-						processedModel.addProcessorError(moduleFileName(module), statement,
+						processedModel.addProcessorError(moduleFileName, statement,
 								"the \"" + YangNameUtils.getYangName(statement)
 										+ "\" property already exists in node \"" + nodeQName(targetNode) + "\"");
 					}
@@ -166,7 +173,7 @@ protected void processDeviate(Deviate deviate, AbstractModule module, ProcessedD
 				if (existingProperty.isPresent()) {
 					targetNode.getSubstatements().remove(existingProperty.get());
 				} else {
-					processedModel.addProcessorError(moduleFileName(module), statement,
+					processedModel.addProcessorError(moduleFileName, statement,
 							"the \"" + YangNameUtils.getYangName(statement) + "\" property does not exist in node \""
 									+ nodeQName(targetNode) + "\"");
 				}
@@ -185,7 +192,7 @@ protected void processDeviate(Deviate deviate, AbstractModule module, ProcessedD
 						// config could be inherited from parent or be default = true
 						targetNode.getSubstatements().add(ProcessorUtility.copyEObject(statement));
 					} else {
-						processedModel.addProcessorError(moduleFileName(module), statement,
+						processedModel.addProcessorError(moduleFileName, statement,
 								"the \"" + YangNameUtils.getYangName(statement)
 										+ "\" property does not exist in node \"" + nodeQName(targetNode) + "\"");
 					}
@@ -195,7 +202,7 @@ protected void processDeviate(Deviate deviate, AbstractModule module, ProcessedD
 		case "not-supported":
 			if (targetNode.eContainer() == null) {
 				if (!Objects.equal("not-supported", DeviationAdapter.find(targetNode))) {
-					processedModel.addProcessorError(moduleFileName(module), deviation.getReference(),
+					processedModel.addProcessorError(moduleFileName, deviation.getReference(),
 							"Deviation target node has no parent.");
 				}
 				break;
@@ -209,8 +216,8 @@ protected void processDeviate(Deviate deviate, AbstractModule module, ProcessedD
 		}
 	}
 
-	protected String moduleFileName(AbstractModule module) {
-		return module.eResource().getURI().lastSegment();
+	protected String moduleFileName(EObject eObj) {
+		return eObj.eResource().getURI().lastSegment();
 	}
 
 	protected String nodeQName(SchemaNode node) {
@@ -249,14 +256,14 @@ protected boolean matchingArguments(Statement candidate, Statement objToMatch) {
 		return true;
 	}
 
-	protected void processAugment(Augment augment, AbstractModule module, FeatureEvaluationContext evalCtx) {
+	protected void processAugment(Augment augment, FeatureEvaluationContext evalCtx) {
 		List<IfFeature> ifFeatures = ProcessorUtility.findIfFeatures(augment);
 		boolean featuresMatch = ProcessorUtility.checkIfFeatures(ifFeatures, evalCtx);
 		// disabled by feature
 		if (!featuresMatch) {
 			return;
 		}
-		var globalModuleId = ProcessorUtility.moduleIdentifier(module);
+		var globalModuleId = ProcessorUtility.moduleIdentifier(augment);
 
 		augment.getSubstatements().stream().filter(sub -> !(sub instanceof IfFeature)).forEach((subStatement) -> {
 			// TODO check what can be added
diff --git a/yang-lsp/io.typefox.yang/src/test/java/io/typefox/yang/tests/processor/DeviationTest.xtend b/yang-lsp/io.typefox.yang/src/test/java/io/typefox/yang/tests/processor/DeviationTest.xtend
index 8469b824..6d78c1ad 100644
--- a/yang-lsp/io.typefox.yang/src/test/java/io/typefox/yang/tests/processor/DeviationTest.xtend
+++ b/yang-lsp/io.typefox.yang/src/test/java/io/typefox/yang/tests/processor/DeviationTest.xtend
@@ -6,6 +6,7 @@ import io.typefox.yang.tests.AbstractYangTest
 import org.junit.Test
 
 import static org.junit.Assert.assertEquals
+import io.typefox.yang.processor.DataTreeSerializer
 
 class DeviationTest extends AbstractYangTest {
 
@@ -303,11 +304,45 @@ class DeviationTest extends AbstractYangTest {
 		val processor = new YangProcessor()
 		val processedData = processor.process(#[mainModule], null, null)
 		assertEquals(2, processedData.messages.size)
-		assertEquals(
-			"__synthetic0.yang:15:9 Error: mismatched input 'le' expecting '}'",
+		assertEquals("__synthetic0.yang:15:9 Error: mismatched input 'le' expecting '}'",
 			processedData.messages.head.toString)
-		assertEquals(
-			"__synthetic0.yang:19:9 Error: missing EOF at 'container'",
-			processedData.messages.get(1).toString)
+		assertEquals("__synthetic0.yang:19:9 Error: missing EOF at 'container'", processedData.messages.get(1).toString)
+	}
+
+	@Test
+	def void testDeviateAugmentedNode() {
+
+		val mainModule = '''
+			module base-test-module {
+			    yang-version 1.1;
+			    namespace yang:base-test-module;
+			    prefix btm;
+			
+			    container system {
+			        leaf simple-leaf {
+			            type string;
+			        }
+			    }
+			
+			    augment "/btm:system" {
+			        container encrypted-private-key {
+			            leaf encrypted-key {
+			                type string;
+			            }
+			        }
+			    }
+			
+			    deviation "/system/encrypted-private-key" {
+			        deviate not-supported;
+			    }
+			}
+		'''.loadWithSyntaxErrors().root
+		val processor = new YangProcessor()
+		val processedData = processor.process(#[mainModule], null, null)
+		assertEquals('''
+		module: base-test-module
+		  +--rw system
+		     +--rw simple-leaf?   string
+		'''.toString, new DataTreeSerializer().serialize(processedData.modules.get(0)).toString)
 	}
 }