diff --git a/unittests/ADT/StringRefTest.cpp b/unittests/ADT/StringRefTest.cpp
index ac65829..cc7a7fb 100644
--- a/unittests/ADT/StringRefTest.cpp
+++ b/unittests/ADT/StringRefTest.cpp
@@ -319,8 +319,8 @@
   , {"256", 256}
   , {"65535", 65535}
   , {"65536", 65536}
-  , {"4294967295", 4294967295}
-  , {"4294967296", 4294967296}
+  , {"4294967295", 4294967295ULL}
+  , {"4294967296", 4294967296ULL}
   , {"18446744073709551615", 18446744073709551615ULL}
   , {"042", 34}
   , {"0x42", 66}
@@ -341,8 +341,8 @@
   , {"32768", 32768}
   , {"-32768", -32768}
   , {"-32769", -32769}
-  , {"2147483647", 2147483647}
-  , {"2147483648", 2147483648}
+  , {"2147483647", 2147483647LL}
+  , {"2147483648", 2147483648LL}
   , {"-2147483648", -2147483648LL}
   , {"-2147483649", -2147483649LL}
   , {"-9223372036854775808", -(9223372036854775807LL) - 1}