diff --git a/aidl_unittest.cpp b/aidl_unittest.cpp
index 02cbf5f..9b899d1 100644
--- a/aidl_unittest.cpp
+++ b/aidl_unittest.cpp
@@ -958,6 +958,22 @@
   EXPECT_EQ(AidlError::BAD_TYPE, error);
 }
 
+TEST_P(AidlTest, FailOnTooBigConstant) {
+  AidlError error;
+  const string expected_stderr =
+      "ERROR: p/IFoo.aidl:3.48-52: Invalid type specifier for an int32 literal: byte\n";
+  CaptureStderr();
+  EXPECT_EQ(nullptr, Parse("p/IFoo.aidl",
+                           R"(package p;
+                      interface IFoo {
+                        const byte type2small = 256;
+                      }
+                   )",
+                           typenames_, GetLanguage(), &error));
+  EXPECT_EQ(expected_stderr, GetCapturedStderr());
+  EXPECT_EQ(AidlError::BAD_TYPE, error);
+}
+
 TEST_P(AidlTest, FailOnManyDefinedTypes) {
   AidlError error;
   const string expected_stderr =