diff --git a/src/metadata/metadata-storage.ts b/src/metadata/metadata-storage.ts
index b0faa99dc..9083f7ec1 100644
--- a/src/metadata/metadata-storage.ts
+++ b/src/metadata/metadata-storage.ts
@@ -80,8 +80,6 @@ export class MetadataStorage {
 
   params: ParamMetadata[] = [];
 
-  private hasAlreadyBeenBuilt = false;
-
   collectQueryHandlerMetadata(definition: ResolverMetadata) {
     this.queries.push(definition);
   }
@@ -176,12 +174,6 @@ export class MetadataStorage {
   }
 
   build(options: SchemaGeneratorOptions) {
-    if (this.hasAlreadyBeenBuilt) {
-      return;
-    }
-
-    this.hasAlreadyBeenBuilt = true;
-
     this.classDirectives.reverse();
     this.fieldDirectives.reverse();
     this.argumentDirectives.reverse();
@@ -222,11 +214,10 @@ export class MetadataStorage {
     this.argumentDirectives = [];
     this.classExtensions = [];
     this.fieldExtensions = [];
+
     this.resolverClasses = [];
     this.fields = [];
     this.params = [];
-
-    this.hasAlreadyBeenBuilt = false;
   }
 
   private buildClassMetadata(definitions: ClassMetadata[]) {