diff --git a/lib/typson-schema.js b/lib/typson-schema.js
index e3154a9..d8144a1 100755
--- a/lib/typson-schema.js
+++ b/lib/typson-schema.js
@@ -130,7 +130,7 @@ var TypeScript, _, traverse; // from global scope
         copyComment(type, definition);
         
         definition.properties = {};
-        mergeInheritedProperties(type, definition, definitions);
+        mergeInheritedProperties(type, definition, definitions, modulePath);
         handlePropertyDeclaration(type, definition, definitions, refPath);
         _.defaults(definition, defaultProperties);
     }
@@ -236,14 +236,24 @@ var TypeScript, _, traverse; // from global scope
      * @param definition {object} the definition to be provisionned
      * @param definitions {object} the set of handled interface and enum definitions
      */
-    function mergeInheritedProperties(type, definition, definitions) {
+    function mergeInheritedProperties(type, definition, definitions, modulePath) {
         if (type.extendsList) {
             _.each(type.extendsList.members, function (superType) {
-                var superDefinition = definitions.interfaces[superType.actualText];
+                var modulePath_ = modulePath ? modulePath : "";
+                var superDefinition;
+                if (definitions.interfaces[modulePath_ + superType.actualText]) {
+                    superDefinition = definitions.interfaces[modulePath_ + superType.actualText];
+                } else if(superType.operand1 &&
+                          superType.operand2 &&
+                          definitions.interfaces[superType.operand1.actualText + "." + superType.operand2.actualText]) {
+                    superDefinition = definitions.interfaces[superType.operand1.actualText + "." + superType.operand2.actualText];
+                } else {
+                    superDefinition = definitions.interfaces[superType.actualText];
+                }
                 // does the provisionning if a definition exists for the current super type
                 if (superDefinition) {
                     // recursive call
-                    mergeInheritedProperties(superType, definition, definitions);
+                    mergeInheritedProperties(superType, definition, definitions, modulePath);
                     // merges properties
                     for(var superKey in superDefinition.properties) {
                         definition.properties[superKey] = superDefinition.properties[superKey];