diff --git a/src/OpenTelemetry.Instrumentation.EventCounters/CHANGELOG.md b/src/OpenTelemetry.Instrumentation.EventCounters/CHANGELOG.md
index aecb87cb95..0bc56cdbaf 100644
--- a/src/OpenTelemetry.Instrumentation.EventCounters/CHANGELOG.md
+++ b/src/OpenTelemetry.Instrumentation.EventCounters/CHANGELOG.md
@@ -3,8 +3,8 @@
 ## Unreleased
 
 * Update OpenTelemetry.Api to 1.3.1.
-* Changed `EventCounter` prefix to `ec` and started abbreviating event source name
-  when instrument name is longer that 63 characters.
+* Change `EventCounter` prefix to `ec` and abbreviate event source name
+  when instrument name is longer than 63 characters.
   ([#740](https://github.com/open-telemetry/opentelemetry-dotnet-contrib/pull/740))
 
 ## 1.0.0-alpha.1
diff --git a/src/OpenTelemetry.Instrumentation.EventCounters/EventCountersMetrics.cs b/src/OpenTelemetry.Instrumentation.EventCounters/EventCountersMetrics.cs
index 18ed7441da..7fa32ee95d 100644
--- a/src/OpenTelemetry.Instrumentation.EventCounters/EventCountersMetrics.cs
+++ b/src/OpenTelemetry.Instrumentation.EventCounters/EventCountersMetrics.cs
@@ -141,10 +141,10 @@ private static string GetInstrumentName(string sourceName, string eventName)
         }
 
         var maxEventSourceLength = MaxInstrumentNameLength - Prefix.Length - 1 - eventName.Length;
-        if (maxEventSourceLength < 2) 
+        if (maxEventSourceLength < 2)
         {
             // event name is too long, there is not enough space for sourceName.
-            // let ec.<eventName> flow to metrics SDK and filter if needed.
+            // let ec.<eventName> flow to metrics SDK and it will suppress it if needed.
             return string.Concat(Prefix, ".", eventName);
         }
 
@@ -159,12 +159,12 @@ private static string GetInstrumentName(string sourceName, string eventName)
 
             if (ind < sourceName.Length)
             {
+                abbreviation.Append(char.ToLowerInvariant(sourceName[ind])).Append('.');
                 if (abbreviation.Length + 2 >= maxEventSourceLength)
                 {
+                    // stop if there is no room to add another letter and a dot after
                     break;
                 }
-
-                abbreviation.Append(char.ToLowerInvariant(sourceName[ind])).Append('.');
             }
 
             int nextDot = sourceName.IndexOf('.', ind);