diff --git a/packages/concerto-core/lib/introspect/mapkeytype.js b/packages/concerto-core/lib/introspect/mapkeytype.js
index acf7ef280..51a3b31e6 100644
--- a/packages/concerto-core/lib/introspect/mapkeytype.js
+++ b/packages/concerto-core/lib/introspect/mapkeytype.js
@@ -71,7 +71,8 @@ class MapKeyType extends Decorated {
     validate() {
 
         if (!ModelUtil.isPrimitiveType(this.type)) {
-            const decl = ModelUtil.getTypeDeclaration(this.ast.type.name, this.modelFile);
+
+            const decl = this.modelFile.getType(this.ast.type.name);
 
             if  (!ModelUtil.isValidMapKeyScalar(decl)) {
                 throw new IllegalModelException(
diff --git a/packages/concerto-core/lib/introspect/mapvaluetype.js b/packages/concerto-core/lib/introspect/mapvaluetype.js
index 9ede733a0..0ea4d8a6a 100644
--- a/packages/concerto-core/lib/introspect/mapvaluetype.js
+++ b/packages/concerto-core/lib/introspect/mapvaluetype.js
@@ -69,7 +69,8 @@ class MapValueType extends Decorated {
      */
     validate() {
         if (!ModelUtil.isPrimitiveType(this.type)) {
-            const decl = ModelUtil.getTypeDeclaration(this.ast.type.name, this.modelFile);
+
+            const decl = this.modelFile.getType(this.ast.type.name);
 
             // All declarations, with the exception of MapDeclarations, are valid Values.
             if(decl.isMapDeclaration?.()) {
diff --git a/packages/concerto-core/lib/modelutil.js b/packages/concerto-core/lib/modelutil.js
index 44a269d0b..d83210b21 100644
--- a/packages/concerto-core/lib/modelutil.js
+++ b/packages/concerto-core/lib/modelutil.js
@@ -338,21 +338,6 @@ class ModelUtil {
             `${MetaModelNamespace}.ObjectMapValueType`
         ].includes(value.$class);
     }
-
-    /**
-     * Returns the corresponding ClassDeclaration representation of the Map Type
-     * @param {string} type - the Type of the Map Value
-     * @param {ModelFile} modelFile - the ModelFile that owns the Property
-     * @return {Object} the corresponding ClassDeclaration representation
-     */
-    static getTypeDeclaration(type, modelFile) {
-        if (modelFile.isLocalType(type)) {
-            return modelFile.getAllDeclarations().find(d => d.name === type);
-        } else {
-            const fqn = modelFile.resolveImport(type);
-            return modelFile.getModelManager().getType(fqn);
-        }
-    }
 }
 
 module.exports = ModelUtil;
diff --git a/packages/concerto-core/test/data/parser/mapdeclaration/mapdeclaration.goodvalue.declaration.participant.cto b/packages/concerto-core/test/data/parser/mapdeclaration/mapdeclaration.goodvalue.declaration.participant.cto
index c3d08c9cc..0c2f4a697 100644
--- a/packages/concerto-core/test/data/parser/mapdeclaration/mapdeclaration.goodvalue.declaration.participant.cto
+++ b/packages/concerto-core/test/data/parser/mapdeclaration/mapdeclaration.goodvalue.declaration.participant.cto
@@ -13,11 +13,11 @@
  */
 namespace com.testing@1.0.0
 
-participant Customer identified by email {
+participant CustomerParticipant identified by email {
   o String email
 }
 
 map Customer {
   o String
-  o Customer
+  o CustomerParticipant
 }