diff --git a/functional/otlp/otel-config-http.yaml b/functional/otlp/otel-config-http.yaml
index 39c264c747..da68e6f96c 100644
--- a/functional/otlp/otel-config-http.yaml
+++ b/functional/otlp/otel-config-http.yaml
@@ -10,6 +10,7 @@ receivers:
   otlp:
     protocols:
       http:
+        endpoint: 0.0.0.0:4318
 
 processors:
   batch:
diff --git a/functional/otlp/otel-config-https.yaml b/functional/otlp/otel-config-https.yaml
index 611bba828f..f106baf8b6 100644
--- a/functional/otlp/otel-config-https.yaml
+++ b/functional/otlp/otel-config-https.yaml
@@ -10,6 +10,7 @@ receivers:
   otlp:
     protocols:
       http:
+        endpoint: 0.0.0.0:4318
         tls:
           ca_file: ../cert/ca.pem
           cert_file: ../cert/server_cert.pem
diff --git a/functional/otlp/otel-docker-config-http.yaml b/functional/otlp/otel-docker-config-http.yaml
index f8e5ad45d3..c18f0e54a4 100644
--- a/functional/otlp/otel-docker-config-http.yaml
+++ b/functional/otlp/otel-docker-config-http.yaml
@@ -9,6 +9,7 @@ receivers:
   otlp:
     protocols:
       http:
+        endpoint: 0.0.0.0:4318
 
 processors:
   batch:
diff --git a/functional/otlp/otel-docker-config-https.yaml b/functional/otlp/otel-docker-config-https.yaml
index 9b3422bf5e..db8f2b3756 100644
--- a/functional/otlp/otel-docker-config-https.yaml
+++ b/functional/otlp/otel-docker-config-https.yaml
@@ -9,6 +9,7 @@ receivers:
   otlp:
     protocols:
       http:
+        endpoint: 0.0.0.0:4318
         tls:
           ca_file: /otel-cpp/ca.pem
           cert_file: /otel-cpp/server_cert.pem