diff --git a/src/Fantomas.Core.Tests/LetBindingTests.fs b/src/Fantomas.Core.Tests/LetBindingTests.fs
index dba78cf6d6..5f1907c1b9 100644
--- a/src/Fantomas.Core.Tests/LetBindingTests.fs
+++ b/src/Fantomas.Core.Tests/LetBindingTests.fs
@@ -2165,3 +2165,11 @@ let x
     ) =
     print "hello"
 """
+
+[<Test>]
+let ``cons pattern in let binding, 1996`` () =
+    formatSourceString false "let x::y = []" config
+    |> should
+        equal
+        "let x :: y = []
+"