diff --git a/src/main/proto/wfa/measurement/api/v2alpha/exchange_step.proto b/src/main/proto/wfa/measurement/api/v2alpha/exchange_step.proto
index 91df85a10..13e104df8 100644
--- a/src/main/proto/wfa/measurement/api/v2alpha/exchange_step.proto
+++ b/src/main/proto/wfa/measurement/api/v2alpha/exchange_step.proto
@@ -68,7 +68,7 @@ message ExchangeStep {
     ];
   }
 
-  // Serialized denormalized `exchange_workflow` field from the ancestor
+  // Denormalized `exchange_workflow` field from the ancestor
   // `RecurringExchange`.
   bytes serialized_exchange_workflow = 3 [
     (google.api.field_behavior) = OUTPUT_ONLY,
diff --git a/src/main/proto/wfa/measurement/api/v2alpha/recurring_exchange.proto b/src/main/proto/wfa/measurement/api/v2alpha/recurring_exchange.proto
index 552d331df..a1eed3267 100644
--- a/src/main/proto/wfa/measurement/api/v2alpha/recurring_exchange.proto
+++ b/src/main/proto/wfa/measurement/api/v2alpha/recurring_exchange.proto
@@ -41,8 +41,8 @@ message RecurringExchange {
   // Resource name.
   string name = 1;
 
-  // The ExchangeWorkflow for this recurring exchange.
-  ExchangeWorkflow exchange_workflow = 2 [
+  // Serialized `ExchangeWorkflow` for this `RecurringExchange`.
+  bytes exchange_workflow = 2 [
     (google.api.field_behavior) = REQUIRED,
     (google.api.field_behavior) = IMMUTABLE
   ];