diff --git a/src/vimtutor b/src/vimtutor
index 409c10c04..b6f7b918a 100755
--- a/src/vimtutor
+++ b/src/vimtutor
@@ -157,7 +157,7 @@ done
 
 
 # We need a temp file for the copy.  First try using a standard command.
-tmp="${TMPDIR-/tmp}"
+tmp="${TMPDIR-@TERMUX_PREFIX@/tmp}"
 # shellcheck disable=SC2186
 TUTORCOPY=$(mktemp "$tmp/tutorXXXXXX" || tempfile -p tutor || echo none)