diff --git a/src/schema.ts b/src/schema.ts
index 32ca8ba7..28b39795 100644
--- a/src/schema.ts
+++ b/src/schema.ts
@@ -45,11 +45,13 @@ export class Converter {
    * Create a new converter
    *
    * @param projectPath Path to the project
+   * @param sourcePath Path to optionally point to a different directory of / or single source file
    */
-  constructor(projectPath: string) {
+  constructor(projectPath: string, sourcePath?: string) {
     // set config for schema generator
     const config: Config = {
       ...DEFAULT_CONFIG,
+      path: sourcePath,
       sortProps: true,
       topRef: false,
       tsconfig: path.join(getTsconfigPath(projectPath), 'tsconfig.json'),