diff --git a/src/backend/replication/logical/decode.c b/src/backend/replication/logical/decode.c
index 5508cc21777..beef399b429 100644
--- a/src/backend/replication/logical/decode.c
+++ b/src/backend/replication/logical/decode.c
@@ -177,7 +177,7 @@ xlog_decode(LogicalDecodingContext *ctx, XLogRecordBuffer *buf)
 					Assert(RecoveryInProgress());
 					ereport(ERROR,
 							(errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
-							 errmsg("logical decoding on a standby requires wal_level to be at least logical on the primary")));
+							 errmsg("logical decoding on standby requires wal_level >= logical on the primary")));
 				}
 				break;
 			}
diff --git a/src/backend/replication/logical/logical.c b/src/backend/replication/logical/logical.c
index 82dae950809..7e1f677f7a0 100644
--- a/src/backend/replication/logical/logical.c
+++ b/src/backend/replication/logical/logical.c
@@ -137,7 +137,7 @@ CheckLogicalDecodingRequirements(void)
 		if (GetActiveWalLevelOnStandby() < WAL_LEVEL_LOGICAL)
 			ereport(ERROR,
 					(errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
-					 errmsg("logical decoding on a standby requires wal_level to be at least logical on the primary")));
+					 errmsg("logical decoding on standby requires wal_level >= logical on the primary")));
 	}
 }
 
diff --git a/src/backend/replication/slot.c b/src/backend/replication/slot.c
index 41848f0ac6d..8021aaa0a8c 100644
--- a/src/backend/replication/slot.c
+++ b/src/backend/replication/slot.c
@@ -1274,7 +1274,7 @@ ReportSlotInvalidation(ReplicationSlotInvalidationCause cause,
 			break;
 
 		case RS_INVAL_WAL_LEVEL:
-			appendStringInfo(&err_detail, _("Logical decoding on standby requires wal_level to be at least logical on the primary server"));
+			appendStringInfo(&err_detail, _("Logical decoding on standby requires wal_level >= logical on the primary server."));
 			break;
 		case RS_INVAL_NONE:
 			pg_unreachable();
diff --git a/src/test/recovery/t/035_standby_logical_decoding.pl b/src/test/recovery/t/035_standby_logical_decoding.pl
index 94a8384c31c..20838d49b53 100644
--- a/src/test/recovery/t/035_standby_logical_decoding.pl
+++ b/src/test/recovery/t/035_standby_logical_decoding.pl
@@ -596,8 +596,8 @@ check_for_invalidation('wal_level_', $logstart, 'due to wal_level');
 check_slots_conflicting_status(1);
 
 $handle = make_slot_active($node_standby, 'wal_level_', 0, \$stdout, \$stderr);
-# We are not able to read from the slot as it requires wal_level at least logical on the primary server
-check_pg_recvlogical_stderr($handle, "logical decoding on a standby requires wal_level to be at least logical on the primary");
+# We are not able to read from the slot as it requires wal_level >= logical on the primary server
+check_pg_recvlogical_stderr($handle, "logical decoding on standby requires wal_level >= logical on the primary");
 
 # Restore primary wal_level
 $node_primary->append_conf('postgresql.conf',q[