diff --git a/.github/matrix.php b/.github/matrix.php
index f3fb1fa7f031..8d81c0e16636 100644
--- a/.github/matrix.php
+++ b/.github/matrix.php
@@ -160,7 +160,7 @@ function select_jobs($repository, $trigger, $nightly, $labels, $php_version, $re
             ? ['zts' => [true, false]]
             : ['zts' => [false]];
     }
-    return $jobs;
+    return ['SOLARIS' => true];
 }
 
 $trigger = $argv[1] ?? 'schedule';
diff --git a/ext/standard/tests/general_functions/proc_open_descriptor_0_setup_failure.phpt b/ext/standard/tests/general_functions/proc_open_descriptor_0_setup_failure.phpt
index ea654b0f497a..0aca62b2903a 100644
--- a/ext/standard/tests/general_functions/proc_open_descriptor_0_setup_failure.phpt
+++ b/ext/standard/tests/general_functions/proc_open_descriptor_0_setup_failure.phpt
@@ -5,8 +5,8 @@ proc_open() closes descriptor 0 when setup fails after pipe allocation
 if (!function_exists("proc_open")) {
     die("skip proc_open() unavailable");
 }
-if (!@is_dir("/proc/self/fd")) {
-    die("skip requires /proc/self/fd");
+if (!@is_link("/proc/self/fd/1")) {
+    die("skip requires /proc/self/fd symlinks");
 }
 ?>
 --FILE--
diff --git a/ext/standard/tests/general_functions/proc_open_socket_descriptor_0_setup_failure.phpt b/ext/standard/tests/general_functions/proc_open_socket_descriptor_0_setup_failure.phpt
index 88e4eee1b20b..f2b30c89309c 100644
--- a/ext/standard/tests/general_functions/proc_open_socket_descriptor_0_setup_failure.phpt
+++ b/ext/standard/tests/general_functions/proc_open_socket_descriptor_0_setup_failure.phpt
@@ -5,8 +5,8 @@ proc_open() closes descriptor 0 when setup fails after socket allocation
 if (!function_exists("proc_open")) {
     die("skip proc_open() unavailable");
 }
-if (!@is_dir("/proc/self/fd")) {
-    die("skip requires /proc/self/fd");
+if (!@is_link("/proc/self/fd/1")) {
+    die("skip requires /proc/self/fd symlinks");
 }
 ?>
 --FILE--