1 files changed, 1 insertions, 1 deletions

diff --git a/editors/diff.c b/editors/diff.c
index 5c8a55b93..0ae7e20b3 100644
--- a/editors/diff.c
+++ b/editors/diff.c
@@ -747,7 +747,7 @@ static int diffreg(char *file[2])
 #else
                         int fd_tmp;
 
-                        if (!(tmpdir=getenv("TMP")) && !(tmpdir=getenv("TEMP")))
+                        if (!(tmpdir=getenv("TMPDIR")))
                                 goto out;
                         tmpfile[i] = xasprintf("%s/difXXXXXX", tmpdir);
                         fd_tmp = xmkstemp(tmpfile[i]);