diff --git a/service/src/main/java/org/whispersystems/textsecuregcm/metrics/CallQualitySurveyManager.java b/service/src/main/java/org/whispersystems/textsecuregcm/metrics/CallQualitySurveyManager.java
index 056fd0391..5e1bba00c 100644
--- a/service/src/main/java/org/whispersystems/textsecuregcm/metrics/CallQualitySurveyManager.java
+++ b/service/src/main/java/org/whispersystems/textsecuregcm/metrics/CallQualitySurveyManager.java
@@ -55,8 +55,9 @@ public class CallQualitySurveyManager {
             .setResponseId(UUID.randomUUID().toString())
             .setSubmissionTimestamp(clock.millis() * 1000)
             .setUserSatisfied(submitCallQualitySurveyRequest.getUserSatisfied())
-            .setStartTimestamp(submitCallQualitySurveyRequest.getStartTimestamp())
-            .setEndTimestamp(submitCallQualitySurveyRequest.getEndTimestamp())
+            // We receive timestamps as milliseconds since the epoch, but the backing data store wants microseconds
+            .setStartTimestamp(submitCallQualitySurveyRequest.getStartTimestamp() * 1_000)
+            .setEndTimestamp(submitCallQualitySurveyRequest.getEndTimestamp() * 1_000)
             .setCallType(submitCallQualitySurveyRequest.getCallType())
             .setSuccess(submitCallQualitySurveyRequest.getSuccess())
             .setCallEndReason(submitCallQualitySurveyRequest.getCallEndReason());
diff --git a/service/src/main/proto/org/signal/chat/call_quality.proto b/service/src/main/proto/org/signal/chat/call_quality.proto
index dabcb9fab..e8d3736e8 100644
--- a/service/src/main/proto/org/signal/chat/call_quality.proto
+++ b/service/src/main/proto/org/signal/chat/call_quality.proto
@@ -36,12 +36,10 @@ message SubmitCallQualitySurveyRequest {
   // to submit debug logs
   optional string debug_log_url = 4;
 
-  // The time at which the call started in microseconds since the epoch (see
-  // https://cloud.google.com/bigquery/docs/reference/standard-sql/data-types#timestamp_type)
+  // The time at which the call started in milliseconds since the epoch
   int64 start_timestamp = 5;
 
-  // The time at which the call ended in microseconds since the epoch (see
-  // https://cloud.google.com/bigquery/docs/reference/standard-sql/data-types#timestamp_type)
+  // The time at which the call ended in milliseconds since the epoch
   int64 end_timestamp = 6;
 
   // The type of call; note that direct voice calls can become video calls and
diff --git a/service/src/test/java/org/whispersystems/textsecuregcm/metrics/CallQualitySurveyManagerTest.java b/service/src/test/java/org/whispersystems/textsecuregcm/metrics/CallQualitySurveyManagerTest.java
index 67328781c..858aff442 100644
--- a/service/src/test/java/org/whispersystems/textsecuregcm/metrics/CallQualitySurveyManagerTest.java
+++ b/service/src/test/java/org/whispersystems/textsecuregcm/metrics/CallQualitySurveyManagerTest.java
@@ -122,8 +122,8 @@ class CallQualitySurveyManagerTest {
     assertEquals(List.of("too_hot", "too_cold"), callQualitySurveyResponsePubSubMessage.getCallQualityIssuesList());
     assertEquals("But this one is just right", callQualitySurveyResponsePubSubMessage.getAdditionalIssuesDescription());
     assertEquals("https://example.com/", callQualitySurveyResponsePubSubMessage.getDebugLogUrl());
-    assertEquals(123456789, callQualitySurveyResponsePubSubMessage.getStartTimestamp());
-    assertEquals(987654321, callQualitySurveyResponsePubSubMessage.getEndTimestamp());
+    assertEquals(123456789L * 1_000, callQualitySurveyResponsePubSubMessage.getStartTimestamp());
+    assertEquals(987654321L * 1_000, callQualitySurveyResponsePubSubMessage.getEndTimestamp());
     assertEquals("direct_video", callQualitySurveyResponsePubSubMessage.getCallType());
     assertTrue(callQualitySurveyResponsePubSubMessage.getSuccess());
     assertEquals("caller_hang_up", callQualitySurveyResponsePubSubMessage.getCallEndReason());