--- a/toolkit/components/telemetry/TelemetryHistogram.cpp
+++ b/toolkit/components/telemetry/TelemetryHistogram.cpp
@@ -142,21 +142,16 @@ struct HistogramInfo {
   SupportedProduct products;
 
   const char *name() const;
   const char *expiration() const;
   nsresult label_id(const char* label, uint32_t* labelId) const;
   bool allows_key(const nsACString& key) const;
 };
 
-enum reflectStatus {
-  REFLECT_OK,
-  REFLECT_FAILURE
-};
-
 // Structs used to keep information about the histograms for which a
 // snapshot should be created.
 struct HistogramSnapshotData {
   nsTArray<Histogram::Sample> mBucketRanges;
   nsTArray<Histogram::Count> mBucketCounts;
   int64_t mSampleSum; // Same type as Histogram::SampleSet::sum_
 };