diff --git a/systemd.spec b/systemd.spec
index dfc7c17..65ade55 100644
--- a/systemd.spec
+++ b/systemd.spec
@@ -25,7 +25,7 @@
 Name:          systemd
 Epoch:         2
 Version:       217
-Release:       3mamba
+Release:       4mamba
 Summary:       A system and service manager compatible with SysV and LSB init scripts
 Group:         System/Configuration
 Vendor:        openmamba
@@ -383,8 +383,10 @@ if [ $1 -ge 1 ]; then
    systemctl -q daemon-reload
    KVER=`uname -r`
    INITRAMFS=/boot/initramfs-$KVER.img
+   KERNEL=/boot/vmlinuz-$KVER
    [ -e $INITRAMFS -a ${_sysconfdir}/systemd/system.conf -nt $INITRAMFS ] || continue
-   mkinitrd $INITRAMFS $KVER -f
+   [ -e $KERNEL -a -e /usr/bin/mkinitrd ] || continue
+   mkinitrd $INITRAMFS $KVER -f -q
 fi
 :
 
@@ -628,6 +630,9 @@ fi
 %{_datadir}/pkgconfig/udev.pc
 
 %changelog
+* Sun Nov 30 2014 Silvan Calarco <silvan.calarco@mambasoft.it> 217-4mamba
+- check for kernel and mkinitrd existence before running mkinitrd
+
 * Sat Nov 22 2014 Silvan Calarco <silvan.calarco@mambasoft.it> 217-3mamba
 - fix myhostname ordering in nsswitch.conf