--- a/src/libsys.c
+++ b/src/libsys.c
@@ -10669,7 +10669,7 @@
 #if HAVE_MKSTEMP
 
 #line 438 "libsys.scm"
-{char nam[]="/tmp/fileXXXXXX";int fd;
+{char nam[]="@TERMUX_PREFIX@/tmp/fileXXXXXX";int fd;
 SCM_SYSCALL(fd,mkstemp(nam));
 if ((fd)<(0)){{Scm_SysError("mkstemp failed");}}
 close(fd);