diff --git a/AlgebraicDataflowArchitectureModel/src/generators/CodeGeneratorFromDataFlowGraph.java b/AlgebraicDataflowArchitectureModel/src/generators/CodeGeneratorFromDataFlowGraph.java
index c18bfc2..91c8bd0 100644
--- a/AlgebraicDataflowArchitectureModel/src/generators/CodeGeneratorFromDataFlowGraph.java
+++ b/AlgebraicDataflowArchitectureModel/src/generators/CodeGeneratorFromDataFlowGraph.java
@@ -480,10 +480,19 @@
 		// Declare the state field in the parent component.
 		ResourceHierarchy res = resourceNode.getOutSideResource().getResourceHierarchy();
 		if (((StoreAttribute) resourceNode.getAttribute()).isStored() && noPullTransfer && res.getNumParameters() == 0) {
-			String resName = getComponentName(res, langSpec);
-			FieldDeclaration stateField = langSpec.newFieldDeclaration(res.getResourceStateType(), langSpec.toVariableName(resName));
-			parentComponent.addField(stateField);
-			constructorParams.add(new AbstractMap.SimpleEntry<>(resourceNode.getParent().getResourceHierarchy(), langSpec.newVariableDeclaration(res.getResourceStateType(), langSpec.toVariableName(resName))));
+			String resName = langSpec.toVariableName(getComponentName(res, langSpec));
+			boolean existsField = false;
+			for (FieldDeclaration field: parentComponent.getFields()) {
+				if (resName.equals(field.getName())) {
+					existsField = true;
+					break;
+				}
+			}
+			if (!existsField) {
+				FieldDeclaration stateField = langSpec.newFieldDeclaration(res.getResourceStateType(), resName);
+				parentComponent.addField(stateField);
+				constructorParams.add(new AbstractMap.SimpleEntry<>(resourceNode.getParent().getResourceHierarchy(), langSpec.newVariableDeclaration(res.getResourceStateType(), resName)));
+			}
 		}
 	}