diff --git a/webrtc/api/stats/rtcstats.h b/webrtc/api/stats/rtcstats.h
index d23e928fad..aea47c22ad 100644
--- a/webrtc/api/stats/rtcstats.h
+++ b/webrtc/api/stats/rtcstats.h
@@ -271,6 +271,8 @@ class RTCStatsMember : public RTCStatsMemberInterface {
         static_cast<const RTCStatsMember<T>&>(other);
     if (!is_defined_)
       return !other_t.is_defined();
+    if (!other.is_defined())
+      return false;
     return value_ == other_t.value_;
   }
   std::string ValueToString() const override;
diff --git a/webrtc/stats/rtcstats_unittest.cc b/webrtc/stats/rtcstats_unittest.cc
index f24519467c..7854355744 100644
--- a/webrtc/stats/rtcstats_unittest.cc
+++ b/webrtc/stats/rtcstats_unittest.cc
@@ -172,6 +172,12 @@ TEST(RTCStatsTest, EqualityOperator) {
   RTCChildStats child("childId", 42);
   RTCGrandChildStats grandchild("grandchildId", 42);
   EXPECT_NE(child, grandchild);
+
+  RTCChildStats stats_with_defined_member("leId", 0);
+  stats_with_defined_member.child_int = 0;
+  RTCChildStats stats_with_undefined_member("leId", 0);
+  EXPECT_NE(stats_with_defined_member, stats_with_undefined_member);
+  EXPECT_NE(stats_with_undefined_member, stats_with_defined_member);
 }
 
 TEST(RTCStatsTest, RTCStatsGrandChild) {