diff --git a/install.sh b/install.sh
index 58f4630..c60bdb3 100755
--- a/install.sh
+++ b/install.sh
@@ -1,7 +1,7 @@
 #!/usr/bin/env sh
 set -e
 
-TMP=$(mktemp pirate-get-XXX)
+TMP=$(mktemp pirate-get-XXXXXX)
 
 {
 	if [ $(which python2.7) ]