Index: Lib/subprocess.py
===================================================================
--- Lib/subprocess.py	(revision 82816)
+++ Lib/subprocess.py	(working copy)
@@ -1091,6 +1091,8 @@
 
             if shell:
                 args = ["/bin/sh", "-c"] + args
+                if executable:
+                    args[0] = executable
 
             if executable is None:
                 executable = args[0]
Index: Lib/test/test_subprocess.py
===================================================================
--- Lib/test/test_subprocess.py	(revision 82816)
+++ Lib/test/test_subprocess.py	(working copy)
@@ -641,6 +641,14 @@
         os.remove(fname)
         self.assertEqual(rc, 47)
 
+    def test_specific_shell(self):
+        # Issue #9265: Incorrect name passed as arg[0].
+        for sh in ["/bin/sh", "/bin/bash", "/bin/ksh"]:
+            if os.path.isfile(sh):
+                p = subprocess.Popen("echo $0", executable=sh, shell=True,
+                                     stdout=subprocess.PIPE)
+                self.assertEqual(p.stdout.read().strip(), sh)
+
     def _kill_process(self, method, *args):
         # Do not inherit file handles from the parent.
         # It should fix failures on some platforms.