diff --git a/docs/observability/logging.md b/docs/observability/logging.md
index 47470d2409..acba3d958b 100644
--- a/docs/observability/logging.md
+++ b/docs/observability/logging.md
@@ -107,10 +107,10 @@ adk web path/to/your/agents_dir
 
 #### GCP export setup
 
-You can enable GCP export using the `-otel_to_cloud` flag:
+You can enable GCP export using the `--otel_to_cloud` flag:
 
 ```bash
-adk web -otel_to_cloud path/to/your/agents_dir
+adk web --otel_to_cloud path/to/your/agents_dir
 ```
 
 ### Python programmatic setup
diff --git a/docs/observability/metrics.md b/docs/observability/metrics.md
index c424d83740..c5be2905ac 100644
--- a/docs/observability/metrics.md
+++ b/docs/observability/metrics.md
@@ -51,10 +51,10 @@ adk web path/to/your/agents_dir
 
 #### GCP export
 
-To enable metrics export to Google Cloud Monitoring, use the `-otel_to_cloud` flag:
+To enable metrics export to Google Cloud Monitoring, use the `--otel_to_cloud` flag:
 
 ```bash
-adk web -otel_to_cloud path/to/your/agents_dir
+adk web --otel_to_cloud path/to/your/agents_dir
 ```
 
 ### Programmatic metrics export
diff --git a/docs/observability/traces.md b/docs/observability/traces.md
index d0c6cee52f..5a4f1a7b1c 100644
--- a/docs/observability/traces.md
+++ b/docs/observability/traces.md
@@ -50,10 +50,10 @@ adk web path/to/your/agents_dir
 
 #### GCP export
 
-To enable trace export to Google Cloud Trace, use the `-otel_to_cloud` flag:
+To enable trace export to Google Cloud Trace, use the `--otel_to_cloud` flag:
 
 ```bash
-adk web -otel_to_cloud path/to/your/agents_dir
+adk web --otel_to_cloud path/to/your/agents_dir
 ```
 
 ### Programmatic traces export