diff --git a/setup.sh b/setup.sh
index 4d15b9b..08c150a 100644
--- a/setup.sh
+++ b/setup.sh
@@ -19,13 +19,13 @@ source ./setenv.sh
 ## root PS1
 RED="01;31m"
 cat << EOF >> /root/.PS1
-PS1='\[\033[$RED\]\u\[\033[01;"$SERV_COLOR"m\]@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\]$ '
+PS1='\[\033[$RED\]\u\[\033[01;${SERV_COLOR}m\]@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\]$ '
 EOF
 
 ## user PS1
 GREEN="01;32m"
 cat << EOF >> ../../.PS1
-PS1='\[\033[$GREEN\]\u\[\033[01;"$SERV_COLOR"m\]@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\]$ '
+PS1='\[\033[$GREEN\]\u\[\033[01;${SERV_COLOR}m\]@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\]$ '
 EOF
 
 if [ -f ../../.env ] ; then