diff --git a/tests/cases/conformance/types/specifyingTypes/typeQueries/circularTypeofWithVarOrFunc.ts b/tests/cases/conformance/types/specifyingTypes/typeQueries/circularTypeofWithVarOrFunc.ts
index e3483aa27d3..d80f16458f0 100644
--- a/tests/cases/conformance/types/specifyingTypes/typeQueries/circularTypeofWithVarOrFunc.ts
+++ b/tests/cases/conformance/types/specifyingTypes/typeQueries/circularTypeofWithVarOrFunc.ts
@@ -7,3 +7,20 @@ type typeAlias2 = typeof varOfAliasedType2;
 function func(): typeAlias3 { return null; }
 var varOfAliasedType3 = func();
 type typeAlias3 = typeof varOfAliasedType3;
+
+// Repro from #26104
+
+interface Input {
+  a: number;
+  b: number;
+}
+
+type R = ReturnType<typeof mul>;
+function mul(input: Input): R {
+  return input.a * input.b;
+}
+
+// Repro from #26104
+
+type R2 = ReturnType<typeof f>;
+function f(): R2 { return 0; }