diff --git a/src/backend/executor/execTuples.c b/src/backend/executor/execTuples.c
index b547792240..00dc339615 100644
--- a/src/backend/executor/execTuples.c
+++ b/src/backend/executor/execTuples.c
@@ -160,7 +160,7 @@ tts_virtual_is_current_xact_tuple(TupleTableSlot *slot)
 
 	ereport(ERROR,
 			(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
-			 errmsg("don't have a storage tuple in this context")));
+			 errmsg("don't have transaction information for this type of tuple")));
 
 	return false;				/* silence compiler warnings */
 }
@@ -577,7 +577,7 @@ tts_minimal_is_current_xact_tuple(TupleTableSlot *slot)
 
 	ereport(ERROR,
 			(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
-			 errmsg("don't have a storage tuple in this context")));
+			 errmsg("don't have transaction information for this type of tuple")));
 
 	return false;				/* silence compiler warnings */
 }