diff --git a/proto/opamp.proto b/proto/opamp.proto
index e78b35e..3721f84 100644
--- a/proto/opamp.proto
+++ b/proto/opamp.proto
@@ -564,7 +564,7 @@ message AgentDescription {
     //   Agent type, e.g. "io.opentelemetry.collector"
     // - service.namespace if it is used in the environment where the Agent runs.
     // - service.version should be set to version number of the Agent build.
-    // - service.instance.id should be set. It may be be set equal to the Agent's
+    // - service.instance.id should be set. It may be set equal to the Agent's
     //   instance uid (equal to ServerToAgent.instance_uid field) or any other value
     //   that uniquely identifies the Agent in combination with other attributes.
     // - any other attributes that are necessary for uniquely identifying the Agent's
diff --git a/specification.md b/specification.md
index 88213e0..c4659e7 100644
--- a/specification.md
+++ b/specification.md
@@ -1108,7 +1108,7 @@ attributes SHOULD be specified:
 - service.name should be set to the same value that the Agent uses in its own telemetry.
 - service.namespace if it is used in the environment where the Agent runs.
 - service.version should be set to version number of the Agent build.
-- service.instance.id should be set. It may be be set equal to the Agent's
+- service.instance.id should be set. It may be set equal to the Agent's
   instance uid (equal to ServerToAgent.instance_uid field) or any other value
   that uniquely identifies the Agent in combination with other attributes.
 - any other attributes that are necessary for uniquely identifying the Agent's