Index: clang-tools-extra/trunk/clang-tidy/objc/PropertyDeclarationCheck.cpp
===================================================================
--- clang-tools-extra/trunk/clang-tidy/objc/PropertyDeclarationCheck.cpp
+++ clang-tools-extra/trunk/clang-tidy/objc/PropertyDeclarationCheck.cpp
@@ -45,6 +45,7 @@
     "AR",
     "ARGB",
     "ASCII",
+    "AV",
     "BGRA",
     "CA",
     "CF",
@@ -153,7 +154,7 @@
   std::string StartMatcher = UsedInMatcher ? "::" : "^";
   std::string AcronymsMatcher = AcronymsGroupRegex(EscapedAcronyms);
   return StartMatcher + "(" + AcronymsMatcher + "[A-Z]?)?[a-z]+[a-z0-9]*(" +
-         AcronymsMatcher + "|([A-Z][a-z0-9]+))*$";
+         AcronymsMatcher + "|([A-Z][a-z0-9]+)|A|I)*$";
 }
 
 bool hasCategoryPropertyPrefix(llvm::StringRef PropertyName) {
Index: clang-tools-extra/trunk/test/clang-tidy/objc-property-declaration.m
===================================================================
--- clang-tools-extra/trunk/test/clang-tidy/objc-property-declaration.m
+++ clang-tools-extra/trunk/test/clang-tidy/objc-property-declaration.m
@@ -22,6 +22,7 @@
 @property(assign, nonatomic) int shouldUseCFPreferences;
 @property(assign, nonatomic) int enableGLAcceleration;
 @property(assign, nonatomic) int ID;
+@property(assign, nonatomic) int hasADog;
 @end
 
 @interface Foo (Bar)