1 files changed, 1 insertions, 1 deletions
diff --git a/posix-modules b/posix-modules
index b3831c9fb5..4629161571 100755
--- a/posix-modules
+++ b/posix-modules
@@ -172,7 +172,7 @@ func_tmpdir ()
   # Use the environment variable TMPDIR, falling back to /tmp. This allows
   # users to specify a different temporary directory, for example, if their
   # /tmp is filled up or too small.
-  : ${TMPDIR=/tmp}
+  : "${TMPDIR=/tmp}"
   {
     # Use the mktemp program if available. If not available, hide the error
     # message.