diff --git a/src/bin/pg_dump/pg_dump.c b/src/bin/pg_dump/pg_dump.c
index 955550b91d2..ed85d843d5f 100644
--- a/src/bin/pg_dump/pg_dump.c
+++ b/src/bin/pg_dump/pg_dump.c
@@ -521,6 +521,9 @@ main(int argc, char **argv)
 		{NULL, 0, NULL, 0}
 	};
 
+	/* ensure that locale does not affect floating point interpretation */
+	setlocale(LC_NUMERIC, "C");
+
 	pg_logging_init(argv[0]);
 	pg_logging_set_level(PG_LOG_WARNING);
 	set_pglocale_pgservice(argv[0], PG_TEXTDOMAIN("pg_dump"));