diff --git a/src/transformer.ts b/src/transformer.ts
index a8a8908..8cea7ff 100644
--- a/src/transformer.ts
+++ b/src/transformer.ts
@@ -20,7 +20,7 @@ const identifierProgram = (program: ts.Program, options: any) => {
                         console.log(`Type symbol: ${type.localSymbol?.name} : ${type.id} : ${type.getText()}`)  // eslint-disable-line no-console
 
                         for ( const decl of interfaceDeclarations ) {
-                            if ( decl.name.symbol === (type as any).typeName.symbol ) {
+                            if ( decl?.name?.symbol === (type as any)?.typeName?.symbol ) {
                                 console.log(`Match to interface: ${decl.name.text}`)  // eslint-disable-line no-console
                                 console.log(decl)  // eslint-disable-line no-console