diff --git a/SPECS/mattermost.spec b/SPECS/mattermost.spec
index 4a6c871..d0a367f 100644
--- a/SPECS/mattermost.spec
+++ b/SPECS/mattermost.spec
@@ -14,7 +14,7 @@ Source0      : mattermost.service
 Source1      : mattermost.logrotate
 BuildRequires: golang
 BuildRequires: git
-Requires     : git
+BuildRequires: optipng
 
 
 %description
@@ -31,6 +31,7 @@ git clone https://github.com/mattermost/mattermost-server/
 git clone https://github.com/mattermost/mattermost-webapp/
 
 
+
 %build
 export GOPATH=`pwd`
 cd src/github.com/mattermost/mattermost-server/
@@ -42,7 +43,12 @@ sed 's/amd64/%{_arch}/g' -i build/release.mk
 make build-linux
 cd ../mattermost-webapp
 git checkout tags/v%{version}
-make build
+npm install
+%ifarch ppc64 ppc64le
+# because optipng doesn't build on ppc64 or ppc64le
+cp %{_bindir}/optipng node_modules/optipng-bin/vendor/optipng
+%endif
+npm run build
 
 
 %install