diff --git a/clang/lib/Lex/LiteralSupport.cpp b/clang/lib/Lex/LiteralSupport.cpp
index 5cd54975055d..004e6755e5f5 100644
--- a/clang/lib/Lex/LiteralSupport.cpp
+++ b/clang/lib/Lex/LiteralSupport.cpp
@@ -375,7 +375,7 @@ NumericLiteralParser(const char *begin, const char *end,
       continue;  // Success.
     case 'i':
       if (PP.getLangOptions().Microsoft) {
-        if (isFPConstant || isUnsigned || isLong || isLongLong) break;
+        if (isFPConstant || isLong || isLongLong) break;
 
         // Allow i8, i16, i32, i64, and i128.
         if (s + 1 != ThisTokEnd) {
diff --git a/clang/test/Lexer/constants-ms.c b/clang/test/Lexer/constants-ms.c
index 5b3f82611977..02d5594d5bdb 100644
--- a/clang/test/Lexer/constants-ms.c
+++ b/clang/test/Lexer/constants-ms.c
@@ -7,6 +7,19 @@ __int64 x5 = 0x42i64;
 __int64 x4 = 70000000i128;
 
 __int64 y = 0x42i64u;  // expected-error {{invalid suffix}}
-__int64 w = 0x43ui64;  // expected-error {{invalid suffix}}
+__int64 w = 0x43ui64; 
 __int64 z = 9Li64;  // expected-error {{invalid suffix}}
 __int64 q = 10lli64;  // expected-error {{invalid suffix}}
+
+// radar 7562363
+#define ULLONG_MAX 0xffffffffffffffffui64
+#define UINT 0xffffffffui32
+#define USHORT 0xffffui8
+#define UCHAR 0xffffffffui8
+
+void a() {
+	unsigned long long m = ULLONG_MAX;
+	unsigned int n = UINT;
+        unsigned short s = USHORT;
+        unsigned char c = UCHAR;
+}