system is in quotes

diff --git a/.travis.yml b/.travis.yml
index c1c4ccdc02f3343787952ac83059ed5a683b6e16..7d8abadd0f1b3e93232727ce1aa022ec46b155e9 100644 (file)
--- a/.travis.yml
+++ b/.travis.yml
@@ -10,7 +10,7 @@ before_install:
     liblist-moreutils-perl libtext-template-perl graphviz
 language: perl
 perl:
-  - system # we need to use the system perl modules
+  - "system" # we need to use the system perl modules
 script:
   - make
   - make test