--- a/toolkit/components/telemetry/Telemetry.cpp
+++ b/toolkit/components/telemetry/Telemetry.cpp
@@ -77,26 +77,25 @@ private:
 
 // A initializer to initialize histogram collection
 StatisticsRecorder gStatisticsRecorder;
 
 // Hardcoded probes
 struct TelemetryHistogram {
   Histogram *histogram;
   const char *id;
-  const char *name;
   PRUint32 min;
   PRUint32 max;
   PRUint32 bucketCount;
   PRUint32 histogramType;
 };
 
 const TelemetryHistogram gHistograms[] = {
-#define HISTOGRAM(id, name, min, max, bucket_count, histogram_type, b) \
-  { NULL, NS_STRINGIFY(id), name, min, max, bucket_count, nsITelemetry::HISTOGRAM_ ## histogram_type },
+#define HISTOGRAM(id, min, max, bucket_count, histogram_type, b) \
+  { NULL, NS_STRINGIFY(id), min, max, bucket_count, nsITelemetry::HISTOGRAM_ ## histogram_type },
 
 #include "TelemetryHistograms.h"
 
 #undef HISTOGRAM
 };
 
 nsresult
 HistogramGet(const char *name, PRUint32 min, PRUint32 max, PRUint32 bucketCount,
@@ -137,17 +136,17 @@ GetHistogramByEnumId(Telemetry::ID id, H
   static Histogram* knownHistograms[Telemetry::HistogramCount] = {0};
   Histogram *h = knownHistograms[id];
   if (h) {
     *ret = h;
     return NS_OK;
   }
 
   const TelemetryHistogram &p = gHistograms[id];
-  nsresult rv = HistogramGet(p.name, p.min, p.max, p.bucketCount, p.histogramType, &h);
+  nsresult rv = HistogramGet(p.id, p.min, p.max, p.bucketCount, p.histogramType, &h);
   if (NS_FAILED(rv))
     return NS_ERROR_FAILURE;
 
   *ret = knownHistograms[id] = h;
   return NS_OK;
 }
 
 bool

--- a/toolkit/components/telemetry/Telemetry.h
+++ b/toolkit/components/telemetry/Telemetry.h
@@ -38,17 +38,17 @@
 
 #ifndef Telemetry_h__
 #define Telemetry_h__
 
 namespace mozilla {
 namespace Telemetry {
 
 enum ID {
-#define HISTOGRAM(name, a, b, c, d, e, f) name,
+#define HISTOGRAM(name, a, b, c, d, e) name,
 
 #include "TelemetryHistograms.h"
 
 #undef HISTOGRAM
 HistogramCount
 };
 
 /**

--- a/toolkit/components/telemetry/TelemetryHistograms.h
+++ b/toolkit/components/telemetry/TelemetryHistograms.h
@@ -37,14 +37,14 @@
  * ***** END LICENSE BLOCK ***** */
 
 /**
  * This file lists Telemetry histograms collected by Firefox.
  *  Format is HISTOGRAM(id, histogram name, minium, maximum, bucket count,
  * histogram kind, human-readable description for about:telemetry)
  */
 
-HISTOGRAM(CYCLE_COLLECTOR, "nsCycleCollector::Collect (ms)", 1, 10000, 50, EXPONENTIAL, "Time spent on cycle collection")
-HISTOGRAM(TELEMETRY_PING, "Telemetry.ping (ms)", 1, 3000, 10, EXPONENTIAL, "Telemetry submission lag")
-HISTOGRAM(TELEMETRY_SUCCESS, "Telemetry.success (No, Yes)", 0, 1, 2, BOOLEAN,  "Success rate of telemetry submissions")
-HISTOGRAM(MEMORY_JS_GC_HEAP, "Memory::explicit/js/gc-heap (MB)", 1024, 512 * 1024, 10, EXPONENTIAL, "Memory used by the JavaScript GC")
-HISTOGRAM(MEMORY_RESIDENT, "Memory::resident (MB)", 32 * 1024, 1024 * 1024, 10, EXPONENTIAL, "Resident memory reported by OS")
-HISTOGRAM(MEMORY_LAYOUT_ALL, "Memory::explicit/layout/all (MB)", 1024, 64 * 1024, 10, EXPONENTIAL, "Memory reported used by layout")
+HISTOGRAM(CYCLE_COLLECTOR, 1, 10000, 50, EXPONENTIAL, "Time(ms) spent on cycle collection")
+HISTOGRAM(TELEMETRY_PING, 1, 3000, 10, EXPONENTIAL, "Time(ms) taken to submit telemetry info")
+HISTOGRAM(TELEMETRY_SUCCESS, 0, 1, 2, BOOLEAN,  "Success(No, Yes) rate of telemetry submissions")
+HISTOGRAM(MEMORY_JS_GC_HEAP, 1024, 512 * 1024, 10, EXPONENTIAL, "Memory(MB) used by the JavaScript GC")
+HISTOGRAM(MEMORY_RESIDENT, 32 * 1024, 1024 * 1024, 10, EXPONENTIAL, "Resident memory(MB) reported by OS")
+HISTOGRAM(MEMORY_LAYOUT_ALL, 1024, 64 * 1024, 10, EXPONENTIAL, "Memory(MB) reported used by layout")

--- a/toolkit/components/telemetry/tests/unit/test_TelemetryPing.js
+++ b/toolkit/components/telemetry/tests/unit/test_TelemetryPing.js
@@ -67,18 +67,18 @@ function checkHistograms(request, respon
     appBuildID: "2007010101",
     platformBuildID: "2007010101"
   };
 
   for (let f in expected_info) {
     do_check_eq(payload.info[f], expected_info[f]);
   }
 
-  const TELEMETRY_PING = "Telemetry.ping (ms)";
-  const TELEMETRY_SUCCESS = "Telemetry.success (No, Yes)";
+  const TELEMETRY_PING = "TELEMETRY_PING";
+  const TELEMETRY_SUCCESS = "TELEMETRY_SUCCESS";
   do_check_true(TELEMETRY_PING in payload.histograms)
 
   // There should be one successful report from the previos telemetry ping
   const expected_tc = {
     range: [1, 2],
     bucket_count: 3,
     histogram_type: 2,
     values: {0:0, 1:1, 2:0}