diff --git a/specification/trace/semantic_conventions/rpc.md b/specification/trace/semantic_conventions/rpc.md
index ca2201ab8df..6c863c43ca0 100644
--- a/specification/trace/semantic_conventions/rpc.md
+++ b/specification/trace/semantic_conventions/rpc.md
@@ -34,7 +34,7 @@ The _span name_ MUST be the full RPC method name formatted as:
 $package.$service/$method
 ```
 
-(where $service must not contain dots)
+(where $service must not contain dots and $method must not contain slashes)
 
 If there is no package name or if it is unknown, the `$package.` part (including the period) is omitted.