diff --git a/docs/trace_rpc_apis.md b/docs/trace_rpc_apis.md
index e8db0bcbc5..7f04d497a7 100644
--- a/docs/trace_rpc_apis.md
+++ b/docs/trace_rpc_apis.md
@@ -16,7 +16,7 @@ implementations of Besu might track gas refunds separately.
 
 ### Returned Memory from Calls
 
-In the `vmTrace` `ope.ex.mem` fields Besu only reports actual data returned
+In the `vmTrace` `op.ex.mem` fields Besu only reports actual data returned
 from a `RETURN` opcode.  Other implementations return the contents of the 
 reserved output space for the call operations.  Note two major differences: