diff --git a/packages/SystemUI/src/com/android/systemui/util/sensors/ProximitySensor.java b/packages/SystemUI/src/com/android/systemui/util/sensors/ProximitySensor.java
index 57f58c6..ff7716a 100644
--- a/packages/SystemUI/src/com/android/systemui/util/sensors/ProximitySensor.java
+++ b/packages/SystemUI/src/com/android/systemui/util/sensors/ProximitySensor.java
@@ -83,20 +83,21 @@
     private ThresholdSensor.Listener mSecondaryEventListener = new ThresholdSensor.Listener() {
         @Override
         public void onThresholdCrossed(ThresholdSensorEvent event) {
-            // This sensor should only be used briefly. Turn it off as soon as we get a reading.
-            mSecondaryThresholdSensor.pause();
-
             // Only check the secondary as long as the primary thinks we're near.
             if (!mLastPrimaryEvent.getBelow()) {
+                mSecondaryThresholdSensor.pause();
                 mCancelSecondaryRunnable = null;
                 return;
             }
             logDebug("Secondary sensor event: " + event.getBelow() + ".");
 
-            // Check this sensor again in a moment.
-            mCancelSecondaryRunnable = mDelayableExecutor.executeDelayed(
-                    mSecondaryThresholdSensor::resume, SECONDARY_PING_INTERVAL_MS);
-
+            // This sensor should only be used briefly when uncovered.
+            if (!event.getBelow()) {
+                mSecondaryThresholdSensor.pause();
+                // Check this sensor again in a moment.
+                mCancelSecondaryRunnable = mDelayableExecutor.executeDelayed(
+                        mSecondaryThresholdSensor::resume, SECONDARY_PING_INTERVAL_MS);
+            }
             onSensorEvent(event);
         }
     };
diff --git a/packages/SystemUI/src/com/android/systemui/util/sensors/ThresholdSensorImpl.java b/packages/SystemUI/src/com/android/systemui/util/sensors/ThresholdSensorImpl.java
index 5bedea1..aa50292 100644
--- a/packages/SystemUI/src/com/android/systemui/util/sensors/ThresholdSensorImpl.java
+++ b/packages/SystemUI/src/com/android/systemui/util/sensors/ThresholdSensorImpl.java
@@ -51,7 +51,7 @@
         @Override
         public void onSensorChanged(SensorEvent event) {
             boolean below = event.values[0] < mThreshold;
-            boolean above = event.values[0] > mThresholdLatch;
+            boolean above = event.values[0] >= mThresholdLatch;
             logDebug("Sensor value: " + event.values[0]);
             onSensorEvent(below, above, event.timestamp);
         }
diff --git a/packages/SystemUI/tests/src/com/android/systemui/util/sensors/ProximitySensorDualTest.java b/packages/SystemUI/tests/src/com/android/systemui/util/sensors/ProximitySensorDualTest.java
index 81a5747..433ec18 100644
--- a/packages/SystemUI/tests/src/com/android/systemui/util/sensors/ProximitySensorDualTest.java
+++ b/packages/SystemUI/tests/src/com/android/systemui/util/sensors/ProximitySensorDualTest.java
@@ -86,10 +86,9 @@
         // Trigger second sensor.
         mThresholdSensorSecondary.triggerEvent(true, 0);
         assertFalse(mThresholdSensorPrimary.isPaused());
-        assertTrue(mThresholdSensorSecondary.isPaused());
+        assertFalse(mThresholdSensorSecondary.isPaused());
         assertTrue(listener.mLastEvent.getBelow());
         assertEquals(1, listener.mCallCount);
-        assertTrue(mThresholdSensorSecondary.isPaused());
 
         mProximitySensor.unregister(listener);
     }
@@ -109,10 +108,16 @@
         assertNull(listener.mLastEvent);
         assertEquals(0, listener.mCallCount);
 
-        // Trigger second sensor.
+        // Trigger second sensor. Second sensor remains registered.
         mThresholdSensorSecondary.triggerEvent(true, 0);
         assertTrue(listener.mLastEvent.getBelow());
         assertEquals(1, listener.mCallCount);
+        assertFalse(mThresholdSensorSecondary.isPaused());
+
+        // Triggering above should pause.
+        mThresholdSensorSecondary.triggerEvent(false, 0);
+        assertFalse(listener.mLastEvent.getBelow());
+        assertEquals(2, listener.mCallCount);
         assertTrue(mThresholdSensorSecondary.isPaused());
 
         // Advance time. Second sensor should resume.
@@ -120,12 +125,6 @@
         mFakeExecutor.runNextReady();
         assertFalse(mThresholdSensorSecondary.isPaused());
 
-        // Triggering should pause again.
-        mThresholdSensorSecondary.triggerEvent(false, 0);
-        assertFalse(listener.mLastEvent.getBelow());
-        assertEquals(2, listener.mCallCount);
-        assertTrue(mThresholdSensorSecondary.isPaused());
-
         mProximitySensor.unregister(listener);
     }
 
@@ -143,7 +142,7 @@
         mThresholdSensorPrimary.triggerEvent(true, 0);
         mThresholdSensorSecondary.triggerEvent(true, 0);
         assertFalse(mThresholdSensorPrimary.isPaused());
-        assertTrue(mThresholdSensorSecondary.isPaused());
+        assertFalse(mThresholdSensorSecondary.isPaused());
         assertTrue(listener.mLastEvent.getBelow());
         assertEquals(1, listener.mCallCount);
 
@@ -165,7 +164,7 @@
         mThresholdSensorPrimary.triggerEvent(true, 0);
         mThresholdSensorSecondary.triggerEvent(true, 0);
         assertFalse(mThresholdSensorPrimary.isPaused());
-        assertTrue(mThresholdSensorSecondary.isPaused());
+        assertFalse(mThresholdSensorSecondary.isPaused());
         assertTrue(listener.mLastEvent.getBelow());
         assertEquals(1, listener.mCallCount);
 
diff --git a/packages/SystemUI/tests/src/com/android/systemui/util/sensors/ThresholdSensorImplTest.java b/packages/SystemUI/tests/src/com/android/systemui/util/sensors/ThresholdSensorImplTest.java
index 0d36bd3..8ba7d62 100644
--- a/packages/SystemUI/tests/src/com/android/systemui/util/sensors/ThresholdSensorImplTest.java
+++ b/packages/SystemUI/tests/src/com/android/systemui/util/sensors/ThresholdSensorImplTest.java
@@ -259,7 +259,7 @@
         assertTrue(listener.mBelow);
         assertEquals(1, listener.mCallCount);
 
-        sensor.sendSensorEvent(highValue + 1);
+        sensor.sendSensorEvent(highValue);
 
         assertFalse(listener.mBelow);
         assertEquals(2, listener.mCallCount);