--- a/toolkit/components/telemetry/nsITelemetry.idl
+++ b/toolkit/components/telemetry/nsITelemetry.idl
@@ -57,17 +57,16 @@ interface nsITelemetry : nsISupports
    * where data is consists of the following properties:
    *   min - Minimal bucket size
    *   max - Maximum bucket size
    *   histogram_type - HISTOGRAM_EXPONENTIAL, HISTOGRAM_LINEAR, HISTOGRAM_BOOLEAN
    *                    or HISTOGRAM_COUNT
    *   counts - array representing contents of the buckets in the histogram
    *   ranges -  an array with calculated bucket sizes
    *   sum - sum of the bucket contents
-   *   static - true for histograms defined in TelemetryHistograms.h, false for ones defined with newHistogram
    */
   [implicit_jscontext]
   readonly attribute jsval histogramSnapshots;
 
   /**
    * Get a snapshot of the internally duplicated subsession histograms.
    * @param clear Whether to clear out the subsession histograms after snapshotting.
    * @return An object as histogramSnapshots, except this contains the internally duplicated histograms for subsession telemetry.