diff --git a/test/snapshots/params/input.txt b/test/snapshots/params/input.txt
index ebc4d42..b96e077 100644
--- a/test/snapshots/params/input.txt
+++ b/test/snapshots/params/input.txt
@@ -4,3 +4,7 @@ class A {
   method1(skipped: string, @Arg() b: string) {}
   method2(@Arg() a: string, @Arg() b: string) {}
 }
+
+class B {
+  constructor(@Arg() a: string) {}
+}
\ No newline at end of file
diff --git a/test/snapshots/params/output.txt b/test/snapshots/params/output.txt
index 5b390a4..69183a0 100644
--- a/test/snapshots/params/output.txt
+++ b/test/snapshots/params/output.txt
@@ -8,3 +8,8 @@ class A {
 
 _decorate([__param(1, Arg())], A.prototype, "method1", null);
 _decorate([__param(0, Arg()), __param(1, Arg())], A.prototype, "method2", null);
+
+let B = class B {
+  constructor(a: string) {}
+};
+B = _decorate([__param(0, Arg())], B);
\ No newline at end of file