1 files changed, 5 insertions, 1 deletions

diff --git a/src/util/disk.c b/src/util/disk.c
index fd8e5a654..2d76eab1a 100644
--- a/src/util/disk.c
+++ b/src/util/disk.c
@@ -352,7 +352,11 @@ GNUNET_DISK_mktemp (const char *t)
   char *fn;
 
   if ( (t[0] != '/') &&
-       (t[0] != '\\') )
+       (t[0] != '\\') &&
+#if WINDOWS
+       !(t[0] >= 'A' && t[0] <= 'z' && t[0] != 0 && t[1] == ':')
+#endif
+)
     {
       tmpdir = getenv ("TMPDIR");
       tmpdir = tmpdir ? tmpdir : "/tmp";