diff --git a/install.sh b/install.sh
index 51031d8..8a0fd95 100644
--- a/install.sh
+++ b/install.sh
@@ -349,7 +349,7 @@ sed -i 's#FILES=()#FILES=(/cryptkey/.root.key)#g' /mnt/etc/mkinitcpio.conf
 ## Continue kernel hardening
 unpriv curl https://raw.githubusercontent.com/Kicksecure/security-misc/master/etc/modprobe.d/30_security-misc.conf | tee /mnt/etc/modprobe.d/30_security-misc.conf
 unpriv curl https://raw.githubusercontent.com/Kicksecure/security-misc/master/usr/lib/sysctl.d/990-security-misc.conf | tee /mnt/etc/sysctl.d/990-security-misc.conf
-sed -i 's/kernel.yama.ptrace_scope.*/kernel.yama.ptrace_scope=3/g' /mnt/etc/sysctl.d/990-security-misc.conf
+sed -i 's/kernel.yama.ptrace_scope[[:space:]]*=.*/kernel.yama.ptrace_scope=3/g' /mnt/etc/sysctl.d/990-security-misc.conf
 unpriv curl https://raw.githubusercontent.com/Kicksecure/security-misc/master/etc/sysctl.d/30_silent-kernel-printk.conf | tee /mnt/etc/sysctl.d/30_silent-kernel-printk.conf
 unpriv curl https://raw.githubusercontent.com/Kicksecure/security-misc/master/etc/sysctl.d/30_security-misc_kexec-disable.conf | tee /mnt/etc/sysctl.d/30_security-misc_kexec-disable.conf