diff --git a/pm.sh b/pm.sh
index 0da2b73..a1927a8 100755
--- a/pm.sh
+++ b/pm.sh
@@ -2,19 +2,19 @@
 
 OS=`cat $SH_CONFIG/os`
 
-[ OS == "alpine" ] && \
+[ $OS == "alpine" ] && \
     alias install='apk add' && \
     alias uninstall='apk remove' && \
     alias update='apk update'
 
-[ OS == "void" ] && \
+[ $OS == "void" ] && \
     alias install='xbps-install -Sy' && \
     alias installed='xbps-query -m' && \
     alias uninstall='xbps-remove -Ry' && \
     alias search='xbps-query -Rs' && \
     alias update='xbps-install -Syu'
 
-[ OS == "debian" ] && \
+[ $OS == "debian" ] && \
     alias install='apt install' && \
     alias uninstall='apt remove' && \
     alias update='apt update && apt upgrade -y'