diff --git a/rpm_spec/core-appvm.spec b/rpm_spec/core-appvm.spec
index c446fc3b..0a1b6d3f 100644
--- a/rpm_spec/core-appvm.spec
+++ b/rpm_spec/core-appvm.spec
@@ -44,7 +44,9 @@ The Qubes core files for installation inside a Qubes AppVM.
 %pre
 
 mkdir -p $RPM_BUILD_ROOT/var/lib/qubes
-[ -e $RPM_BUILD_ROOT/etc/fstab ] && mv $RPM_BUILD_ROOT/etc/fstab $RPM_BUILD_ROOT/var/lib/qubes/fstab.orig
+if [ -e $RPM_BUILD_ROOT/etc/fstab ] ; then 
+mv $RPM_BUILD_ROOT/etc/fstab $RPM_BUILD_ROOT/var/lib/qubes/fstab.orig
+fi
 
 %build
 make clean all
diff --git a/rpm_spec/core-netvm.spec b/rpm_spec/core-netvm.spec
index 7d96f014..b7d3df5e 100644
--- a/rpm_spec/core-netvm.spec
+++ b/rpm_spec/core-netvm.spec
@@ -42,7 +42,10 @@ The Qubes core files for installation inside a Qubes NetVM.
 %pre
 
 mkdir -p $RPM_BUILD_ROOT/var/lib/qubes
-[ -e $RPM_BUILD_ROOT/etc/fstab ] && mv $RPM_BUILD_ROOT/etc/fstab $RPM_BUILD_ROOT/var/lib/qubes/fstab.orig
+if [ -e $RPM_BUILD_ROOT/etc/fstab ] ; then 
+mv $RPM_BUILD_ROOT/etc/fstab $RPM_BUILD_ROOT/var/lib/qubes/fstab.orig
+fi
+
 
 %build