diff --git a/specification/protocol/otlp.md b/specification/protocol/otlp.md
index 16ffe30fd..6c83e2dc5 100644
--- a/specification/protocol/otlp.md
+++ b/specification/protocol/otlp.md
@@ -473,7 +473,7 @@ connections SHOULD be configurable.
 
 #### OTLP/HTTP Default Port
 
-The default network port for OTLP/HTTP is 4318.
+The default network port for OTLP/HTTP is 4317.
 
 ## Implementation Recommendations