diff --git a/tests/idris2/coverage012/Issue484.idr b/tests/idris2/coverage012/Issue484.idr
new file mode 100644
index 000000000..236524568
--- /dev/null
+++ b/tests/idris2/coverage012/Issue484.idr
@@ -0,0 +1,12 @@
+%default covering
+
+data Three = Vrai | Faux | Indef
+
+getType : Three -> Type
+getType Vrai = Unit
+getType Faux = Unit
+getType Indef = Void
+
+swap : (t : Three) -> getType t -> Three
+swap Indef _ impossible
+swap Vrai () = Faux
diff --git a/tests/idris2/coverage012/expected b/tests/idris2/coverage012/expected
index 577df0f48..409b36e75 100644
--- a/tests/idris2/coverage012/expected
+++ b/tests/idris2/coverage012/expected
@@ -10,3 +10,17 @@ Issue899.idr:3:1--3:46
 Missing cases:
     zeroImpossible 0 _
 
+1/1: Building Issue484 (Issue484.idr)
+Error: swap is not covering.
+
+Issue484.idr:10:1--10:41
+ 06 | getType Vrai = Unit
+ 07 | getType Faux = Unit
+ 08 | getType Indef = Void
+ 09 | 
+ 10 | swap : (t : Three) -> getType t -> Three
+      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Missing cases:
+    swap Faux _
+
diff --git a/tests/idris2/coverage012/run b/tests/idris2/coverage012/run
index 475966ef9..af70b37e0 100755
--- a/tests/idris2/coverage012/run
+++ b/tests/idris2/coverage012/run
@@ -1,3 +1,4 @@
 $1 --no-color --console-width 0 --check Issue899.idr
+$1 --no-color --console-width 0 --check Issue484.idr
 
 rm -rf build