diff --git a/libs/input/tests/TestEventMatchers.h b/libs/input/tests/TestEventMatchers.h
index 3589de5..290a97d 100644
--- a/libs/input/tests/TestEventMatchers.h
+++ b/libs/input/tests/TestEventMatchers.h
@@ -75,12 +75,18 @@
     using is_gtest_matcher = void;
     explicit WithMotionActionMatcher(int32_t action) : mAction(action) {}
 
-    bool MatchAndExplain(const MotionEvent& event, std::ostream*) const {
-        bool matches = mAction == event.getAction();
-        if (event.getAction() == AMOTION_EVENT_ACTION_CANCEL) {
-            matches &= (event.getFlags() & AMOTION_EVENT_FLAG_CANCELED) != 0;
+    bool MatchAndExplain(const MotionEvent& event, testing::MatchResultListener* listener) const {
+        if (mAction != event.getAction()) {
+            *listener << "expected " << MotionEvent::actionToString(mAction) << ", but got "
+                      << MotionEvent::actionToString(event.getAction());
+            return false;
         }
-        return matches;
+        if (event.getAction() == AMOTION_EVENT_ACTION_CANCEL &&
+            (event.getFlags() & AMOTION_EVENT_FLAG_CANCELED) == 0) {
+            *listener << "event with CANCEL action is missing FLAG_CANCELED";
+            return false;
+        }
+        return true;
     }
 
     void DescribeTo(std::ostream* os) const {
diff --git a/services/inputflinger/tests/TestEventMatchers.h b/services/inputflinger/tests/TestEventMatchers.h
index f58d8fd..7078e49 100644
--- a/services/inputflinger/tests/TestEventMatchers.h
+++ b/services/inputflinger/tests/TestEventMatchers.h
@@ -108,20 +108,33 @@
     using is_gtest_matcher = void;
     explicit WithMotionActionMatcher(int32_t action) : mAction(action) {}
 
-    bool MatchAndExplain(const NotifyMotionArgs& args, std::ostream*) const {
-        bool matches = mAction == args.action;
-        if (args.action == AMOTION_EVENT_ACTION_CANCEL) {
-            matches &= (args.flags & AMOTION_EVENT_FLAG_CANCELED) != 0;
+    bool MatchAndExplain(const NotifyMotionArgs& args,
+                         testing::MatchResultListener* listener) const {
+        if (mAction != args.action) {
+            *listener << "expected " << MotionEvent::actionToString(mAction) << ", but got "
+                      << MotionEvent::actionToString(args.action);
+            return false;
         }
-        return matches;
+        if (args.action == AMOTION_EVENT_ACTION_CANCEL &&
+            (args.flags & AMOTION_EVENT_FLAG_CANCELED) == 0) {
+            *listener << "event with CANCEL action is missing FLAG_CANCELED";
+            return false;
+        }
+        return true;
     }
 
-    bool MatchAndExplain(const MotionEvent& event, std::ostream*) const {
-        bool matches = mAction == event.getAction();
-        if (event.getAction() == AMOTION_EVENT_ACTION_CANCEL) {
-            matches &= (event.getFlags() & AMOTION_EVENT_FLAG_CANCELED) != 0;
+    bool MatchAndExplain(const MotionEvent& event, testing::MatchResultListener* listener) const {
+        if (mAction != event.getAction()) {
+            *listener << "expected " << MotionEvent::actionToString(mAction) << ", but got "
+                      << MotionEvent::actionToString(event.getAction());
+            return false;
         }
-        return matches;
+        if (event.getAction() == AMOTION_EVENT_ACTION_CANCEL &&
+            (event.getFlags() & AMOTION_EVENT_FLAG_CANCELED) == 0) {
+            *listener << "event with CANCEL action is missing FLAG_CANCELED";
+            return false;
+        }
+        return true;
     }
 
     void DescribeTo(std::ostream* os) const {