diff --git a/tests/lang/eval-okay-tail-call-1.exp b/tests/lang/eval-okay-tail-call-1.exp
new file mode 100644
index 00000000..f7393e84
--- /dev/null
+++ b/tests/lang/eval-okay-tail-call-1.exp
@@ -0,0 +1 @@
+100000
diff --git a/tests/lang/eval-okay-tail-call-1.nix b/tests/lang/eval-okay-tail-call-1.nix
new file mode 100644
index 00000000..a3962ce3
--- /dev/null
+++ b/tests/lang/eval-okay-tail-call-1.nix
@@ -0,0 +1,3 @@
+let
+  f = n: if n == 100000 then n else f (n + 1);
+in f 0