diff --git a/base/mac/foundation_util_unittest.mm b/base/mac/foundation_util_unittest.mm
index fc7dd099c57be7..3b72b1225a84e1 100644
--- a/base/mac/foundation_util_unittest.mm
+++ b/base/mac/foundation_util_unittest.mm
@@ -308,8 +308,7 @@
   EXPECT_NSEQ(@"/a/b", FilePathToNSString(FilePath("/a/b")));
 }
 
-// http://crbug.com/173983 Fails consistently under Mac ASAN.
-TEST(FoundationUtilTest, DISABLED_NSStringToFilePath) {
+TEST(FoundationUtilTest, NSStringToFilePath) {
   EXPECT_EQ(FilePath(), NSStringToFilePath(nil));
   EXPECT_EQ(FilePath(), NSStringToFilePath(@""));
   EXPECT_EQ(FilePath("/a/b"), NSStringToFilePath(@"/a/b"));
diff --git a/content/browser/accessibility/browser_accessibility_mac_unittest.mm b/content/browser/accessibility/browser_accessibility_mac_unittest.mm
index d23d8e6a6913c8..5f5d0f21c6cbed 100644
--- a/content/browser/accessibility/browser_accessibility_mac_unittest.mm
+++ b/content/browser/accessibility/browser_accessibility_mac_unittest.mm
@@ -125,8 +125,7 @@ void RebuildAccessibilityTree() {
 }
 
 // Test to ensure querying standard attributes works.
-// http://crbug.com/173983 Test fails on Mac ASan bot
-TEST_F(BrowserAccessibilityTest, DISABLED_BasicAttributeTest) {
+TEST_F(BrowserAccessibilityTest, BasicAttributeTest) {
   NSString* helpText = [accessibility_
       accessibilityAttributeValue:NSAccessibilityHelpAttribute];
   EXPECT_NSEQ(@"HelpText", helpText);