diff --git a/src/mongo/otel/metrics/metric_unit.cpp b/src/mongo/otel/metrics/metric_unit.cpp
index 5bac0b1e55f..d9d574aaab1 100644
--- a/src/mongo/otel/metrics/metric_unit.cpp
+++ b/src/mongo/otel/metrics/metric_unit.cpp
@@ -40,6 +40,8 @@ StringData toString(MetricUnit unit) {
         // Generic
         case MetricUnit::kEvents:
             return "events";
+        case MetricUnit::kCount:
+            return "count";
 
         // Time
         case MetricUnit::kMicroseconds:
diff --git a/src/mongo/otel/metrics/metric_unit.h b/src/mongo/otel/metrics/metric_unit.h
index 7be57ed37cf..7a28054a9ac 100644
--- a/src/mongo/otel/metrics/metric_unit.h
+++ b/src/mongo/otel/metrics/metric_unit.h
@@ -40,6 +40,7 @@ namespace mongo::otel::metrics {
 enum class MetricUnit {
     // Generic
     kEvents,
+    kCount,
 
     // Time
     kMicroseconds,