diff -u -r ../Python-3.7.1/Lib/subprocess.py ./Lib/subprocess.py
--- ../Python-3.7.1/Lib/subprocess.py	2018-10-20 06:04:19.000000000 +0000
+++ ./Lib/subprocess.py	2018-10-20 20:17:50.157206343 +0000
@@ -1389,9 +1389,7 @@
                 args = list(args)
 
             if shell:
-                # On Android the default shell is at '/system/bin/sh'.
-                unix_shell = ('/system/bin/sh' if
-                          hasattr(sys, 'getandroidapilevel') else '/bin/sh')
+                unix_shell = ('@TERMUX_PREFIX@/bin/sh')
                 args = [unix_shell, "-c"] + args
                 if executable:
                     args[0] = executable