diff --git a/src/compiler/checker.ts b/src/compiler/checker.ts
index 8564e9e360e..4d3bdf41a21 100644
--- a/src/compiler/checker.ts
+++ b/src/compiler/checker.ts
@@ -23641,7 +23641,6 @@ namespace ts {
                     break;
                 }
             }
-            checkGrammarForDisallowedTrailingComma(node.elementTypes);
             forEach(node.elementTypes, checkSourceElement);
         }
 
diff --git a/tests/baselines/reference/TupleType5.errors.txt b/tests/baselines/reference/TupleType5.errors.txt
deleted file mode 100644
index 1a6ca7f99b3..00000000000
--- a/tests/baselines/reference/TupleType5.errors.txt
+++ /dev/null
@@ -1,7 +0,0 @@
-tests/cases/conformance/parser/ecmascript5/TupleTypes/TupleType5.ts(1,15): error TS1009: Trailing comma not allowed.
-
-
-==== tests/cases/conformance/parser/ecmascript5/TupleTypes/TupleType5.ts (1 errors) ====
-    var v: [number,]
-                  ~
-!!! error TS1009: Trailing comma not allowed.
\ No newline at end of file
diff --git a/tests/baselines/reference/TupleType6.errors.txt b/tests/baselines/reference/TupleType6.errors.txt
new file mode 100644
index 00000000000..1c3427b8f38
--- /dev/null
+++ b/tests/baselines/reference/TupleType6.errors.txt
@@ -0,0 +1,7 @@
+tests/cases/conformance/parser/ecmascript5/TupleTypes/TupleType6.ts(1,16): error TS1110: Type expected.
+
+
+==== tests/cases/conformance/parser/ecmascript5/TupleTypes/TupleType6.ts (1 errors) ====
+    var v: [number,,]
+                   ~
+!!! error TS1110: Type expected.
\ No newline at end of file
diff --git a/tests/baselines/reference/TupleType6.js b/tests/baselines/reference/TupleType6.js
new file mode 100644
index 00000000000..828d90a72bf
--- /dev/null
+++ b/tests/baselines/reference/TupleType6.js
@@ -0,0 +1,5 @@
+//// [TupleType6.ts]
+var v: [number,,]
+
+//// [TupleType6.js]
+var v;
diff --git a/tests/baselines/reference/TupleType6.symbols b/tests/baselines/reference/TupleType6.symbols
new file mode 100644
index 00000000000..b02a0d6eb5e
--- /dev/null
+++ b/tests/baselines/reference/TupleType6.symbols
@@ -0,0 +1,4 @@
+=== tests/cases/conformance/parser/ecmascript5/TupleTypes/TupleType6.ts ===
+var v: [number,,]
+>v : Symbol(v, Decl(TupleType6.ts, 0, 3))
+
diff --git a/tests/baselines/reference/TupleType6.types b/tests/baselines/reference/TupleType6.types
new file mode 100644
index 00000000000..a5f9c5e59eb
--- /dev/null
+++ b/tests/baselines/reference/TupleType6.types
@@ -0,0 +1,4 @@
+=== tests/cases/conformance/parser/ecmascript5/TupleTypes/TupleType6.ts ===
+var v: [number,,]
+>v : [number, any]
+
diff --git a/tests/cases/conformance/parser/ecmascript5/TupleTypes/TupleType6.ts b/tests/cases/conformance/parser/ecmascript5/TupleTypes/TupleType6.ts
new file mode 100644
index 00000000000..50cca65c6dc
--- /dev/null
+++ b/tests/cases/conformance/parser/ecmascript5/TupleTypes/TupleType6.ts
@@ -0,0 +1 @@
+var v: [number,,]
\ No newline at end of file