1 files changed, 1 insertions, 1 deletions

diff --git a/src/w32.c b/src/w32.c
index d4bfca2bc0b..1fdb47383cb 100644
--- a/src/w32.c
+++ b/src/w32.c
@@ -704,7 +704,7 @@ init_environment (char ** argv)
         {
           char * var = alloca (strlen (tmp) + 8);
           sprintf (var, "TMPDIR=%s", tmp);
-          _putenv (var);
+          _putenv (strdup (var));
           break;
         }
     }