diff --git a/tests/idris2/error/error030/Issue1236.idr b/tests/idris2/error/error030/Issue1236.idr
new file mode 100644
index 000000000..81c44dce7
--- /dev/null
+++ b/tests/idris2/error/error030/Issue1236.idr
@@ -0,0 +1,5 @@
+private
+data Foo : Type
+
+public export
+data Foo : Type where
diff --git a/tests/idris2/error/error030/expected b/tests/idris2/error/error030/expected
new file mode 100644
index 000000000..412228a23
--- /dev/null
+++ b/tests/idris2/error/error030/expected
@@ -0,0 +1,7 @@
+1/1: Building Issue1236 (Issue1236.idr)
+Warning: Main.Foo has been forward-declared with private visibility, cannot change to public export. This will be an error in a later release.
+
+Issue1236:4:1--5:22
+ 4 | public export
+ 5 | data Foo : Type where
+
diff --git a/tests/idris2/error/error030/run b/tests/idris2/error/error030/run
new file mode 100755
index 000000000..e68088a33
--- /dev/null
+++ b/tests/idris2/error/error030/run
@@ -0,0 +1,3 @@
+. ../../../testutils.sh
+
+check Issue1236.idr