--- a/share/functions/fish_update_completions.fish
+++ b/share/functions/fish_update_completions.fish
@@ -26,7 +26,7 @@ function fish_update_completions --description "Update man-page based completion
             # Orphan the job so that it continues to run in case of an early exit (#6269)
             # Note that some distros split the manpage completion script out (#7183).
             # In that case, we silence Python's failure.
-            /bin/sh -c '
+            @TERMUX_PREFIX@/bin/sh -c '
                 c=$(cat)
                 ( printf %s "$c" | "$@" ) >/dev/null 2>&1 &
             ' -- $update_argv $argv
--- a/share/functions/help.fish
+++ b/share/functions/help.fish
@@ -228,7 +228,7 @@ chromium-browser
         # The space before the /c is to prevent msys2 from expanding it to a path
         $fish_browser " /c" start $page_url
     else if contains -- $fish_browser[1] $graphical_browsers
-        /bin/sh -c '( "$@" ) &' -- $fish_browser $page_url
+        @TERMUX_PREFIX@/bin/sh -c '( "$@" ) &' -- $fish_browser $page_url
     else
         $fish_browser $page_url
     end
