diff --git a/src/bin/pg_dump/pg_dump.c b/src/bin/pg_dump/pg_dump.c
index b092b14bed..7d27c1b902 100644
--- a/src/bin/pg_dump/pg_dump.c
+++ b/src/bin/pg_dump/pg_dump.c
@@ -17926,21 +17926,28 @@ getDependencies(Archive *fout)
 	 * entries will have dependencies on their parent opfamily, which we
 	 * should drop since they'd likewise become useless self-dependencies.
 	 * (But be sure to keep deps on *other* opfamilies; see amopsortfamily.)
+	 *
+	 * Skip this for pre-8.3 source servers: pg_opfamily doesn't exist there,
+	 * and the (known) cases where it would matter to have these dependencies
+	 * can't arise anyway.
 	 */
-	appendPQExpBufferStr(query, "UNION ALL\n"
-						 "SELECT 'pg_opfamily'::regclass AS classid, amopfamily AS objid, refclassid, refobjid, deptype "
-						 "FROM pg_depend d, pg_amop o "
-						 "WHERE deptype NOT IN ('p', 'e', 'i') AND "
-						 "classid = 'pg_amop'::regclass AND objid = o.oid "
-						 "AND NOT (refclassid = 'pg_opfamily'::regclass AND amopfamily = refobjid)\n");
+	if (fout->remoteVersion >= 80300)
+	{
+		appendPQExpBufferStr(query, "UNION ALL\n"
+							 "SELECT 'pg_opfamily'::regclass AS classid, amopfamily AS objid, refclassid, refobjid, deptype "
+							 "FROM pg_depend d, pg_amop o "
+							 "WHERE deptype NOT IN ('p', 'e', 'i') AND "
+							 "classid = 'pg_amop'::regclass AND objid = o.oid "
+							 "AND NOT (refclassid = 'pg_opfamily'::regclass AND amopfamily = refobjid)\n");
 
-	/* Likewise for pg_amproc entries */
-	appendPQExpBufferStr(query, "UNION ALL\n"
-						 "SELECT 'pg_opfamily'::regclass AS classid, amprocfamily AS objid, refclassid, refobjid, deptype "
-						 "FROM pg_depend d, pg_amproc p "
-						 "WHERE deptype NOT IN ('p', 'e', 'i') AND "
-						 "classid = 'pg_amproc'::regclass AND objid = p.oid "
-						 "AND NOT (refclassid = 'pg_opfamily'::regclass AND amprocfamily = refobjid)\n");
+		/* Likewise for pg_amproc entries */
+		appendPQExpBufferStr(query, "UNION ALL\n"
+							 "SELECT 'pg_opfamily'::regclass AS classid, amprocfamily AS objid, refclassid, refobjid, deptype "
+							 "FROM pg_depend d, pg_amproc p "
+							 "WHERE deptype NOT IN ('p', 'e', 'i') AND "
+							 "classid = 'pg_amproc'::regclass AND objid = p.oid "
+							 "AND NOT (refclassid = 'pg_opfamily'::regclass AND amprocfamily = refobjid)\n");
+	}
 
 	/* Sort the output for efficiency below */
 	appendPQExpBufferStr(query, "ORDER BY 1,2");