diff --git a/More-Installation-Guides.md b/More-Installation-Guides.md
index 6d3e7d1..541b8b4 100644
--- a/More-Installation-Guides.md
+++ b/More-Installation-Guides.md
@@ -4,8 +4,8 @@ Here are [contributed instructions](https://github.com/koalaman/shellcheck/issue
 
 ```bash
 # Haskell Deps. Or read on and use that source in the wiki.
-yum groupinstall "Development Tools" -y
-yum install gmp-devel zlib # may need epel; zlib as shellcheck builddep reported in #519
+yum -y groupinstall "Development Tools"
+yum -y install gmp-devel zlib # may need epel; zlib as shellcheck builddep reported in #519
 sudo ln -s libgmp.so.3 /usr/lib64/libgmp.so.10 # HACK
 
 # Get haskell. https://www.haskell.org/platform/linux.html#linux-generic