diff -u -r a/collects/racket/system.rkt ./collects/racket/system.rkt
index 9de72fe..78beae6 100644
--- a/racket/collects/racket/system.rkt
+++ ./collects/racket/system.rkt
@@ -17,7 +17,7 @@
 
 (define (shell-path/args who argstr)
   (case (system-type)
-    [(unix macosx) (append '("/bin/sh" "-c") (list argstr))]
+    [(unix macosx) (append '("@TERMUX_PREFIX@/bin/sh" "-c") (list argstr))]
     [(windows) (let ([cmd
                       (let ([d (find-system-path 'sys-dir)])
                         (let ([cmd (build-path d "cmd.exe")])