diff --git a/mypy/checkexpr.py b/mypy/checkexpr.py
index 577576a4e5f8b..11a9cffe18c34 100644
--- a/mypy/checkexpr.py
+++ b/mypy/checkexpr.py
@@ -5612,11 +5612,15 @@ def visit_slice_expr(self, e: SliceExpr) -> Type:
         except KeyError:
             supports_index = self.chk.named_type("builtins.int")  # thanks, fixture life
         expected = make_optional_type(supports_index)
+        type_args = []
         for index in [e.begin_index, e.end_index, e.stride]:
             if index:
                 t = self.accept(index)
                 self.chk.check_subtype(t, expected, index, message_registry.INVALID_SLICE_INDEX)
-        return self.named_type("builtins.slice")
+                type_args.append(t)
+            else:
+                type_args.append(NoneType())
+        return self.chk.named_generic_type("builtins.slice", type_args)
 
     def visit_list_comprehension(self, e: ListComprehension) -> Type:
         return self.check_generator_or_comprehension(
diff --git a/test-data/unit/check-expressions.test b/test-data/unit/check-expressions.test
index d5ddc910bcd63..cd26c9bb408af 100644
--- a/test-data/unit/check-expressions.test
+++ b/test-data/unit/check-expressions.test
@@ -1178,8 +1178,8 @@ class B: pass
 [case testSlicingWithInvalidBase]
 
 a: A
-a[1:2] # E: Invalid index type "slice" for "A"; expected type "int"
-a[:]   # E: Invalid index type "slice" for "A"; expected type "int"
+a[1:2] # E: Invalid index type "slice[int, int, None]" for "A"; expected type "int"
+a[:]   # E: Invalid index type "slice[None, None, None]" for "A"; expected type "int"
 class A:
   def __getitem__(self, n: int) -> 'A': pass
 [builtins fixtures/slice.pyi]