diff --git a/compiler/src/process_custom_component.ts b/compiler/src/process_custom_component.ts
index 0c78a2f..89444ff 100644
--- a/compiler/src/process_custom_component.ts
+++ b/compiler/src/process_custom_component.ts
@@ -163,6 +163,7 @@ function validateCustomComponentPrams(node: ts.ExpressionStatement, name: string
       }
     });
   }
+  validateMandatoryToAssignmentViaParam(node, name, curChildProps, log);
 }
 
 function getCustomComponentName(newNode: ts.NewExpression): string {
@@ -402,7 +403,7 @@ function validateNonExistentProperty(node: ts.ObjectLiteralElementLike,
   });
 }
 
-function validateMandatoryToAssignmentViaParam(node: ts.ExpressionStatement, customComponentName: string,
+function validateMandatoryToAssignmentViaParam(node: ts.CallExpression, customComponentName: string,
   curChildProps: Set<string>, log: LogInfo[]): void {
   if (builderParamObjectCollection.get(customComponentName) &&
     builderParamObjectCollection.get(customComponentName).size) {