diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog
index 212f2ae0c5b..d659ec4ed1a 100644
--- a/gdb/testsuite/ChangeLog
+++ b/gdb/testsuite/ChangeLog
@@ -1,3 +1,7 @@
+2021-04-16  Tom Tromey  <tom@tromey.com>
+
+	* gdb.rust/simple.exp: Add parens to 'as' test.
+
 2021-04-16  Simon Marchi  <simon.marchi@efficios.com>
 
 	* boards/simavr.exp: Set debug_flags.
diff --git a/gdb/testsuite/gdb.rust/simple.exp b/gdb/testsuite/gdb.rust/simple.exp
index 1e5994628c2..6d5cd319f41 100644
--- a/gdb/testsuite/gdb.rust/simple.exp
+++ b/gdb/testsuite/gdb.rust/simple.exp
@@ -88,7 +88,7 @@ gdb_test "print w\[2\] @ 2" " = \\\[3, 4\\\]"
 gdb_test "print w_ptr\[2\]" " = 3"
 gdb_test "print fromslice" " = 3"
 gdb_test "print slice\[0\]" " = 3"
-gdb_test "print slice as &\[i32\]\[0\]" " = 3"
+gdb_test "print (slice as &\[i32\])\[0\]" " = 3"
 
 gdb_test_sequence "ptype slice" "" {
     " = struct &\\\[i32\\\] \\{"