diff --git a/20-grub.install b/20-grub.install
index 3f6e33f..3238e43 100755
--- a/20-grub.install
+++ b/20-grub.install
@@ -62,6 +62,7 @@ case "$COMMAND" in
                     "$KERNEL_DIR"/dtb
             do
                 [[ -e "$i" ]] || continue
+                rm -f "/boot/${i##*/}-${KERNEL_VERSION}"
                 cp -aT "$i" "/boot/${i##*/}-${KERNEL_VERSION}"
                 command -v restorecon &>/dev/null && \
                     restorecon -R "/boot/${i##*/}-${KERNEL_VERSION}"
@@ -69,6 +70,7 @@ case "$COMMAND" in
             # hmac is .vmlinuz-<version>.hmac so needs a special treatment
             i="$KERNEL_DIR/.${KERNEL_IMAGE##*/}.hmac"
             if [[ -e "$i" ]]; then
+                rm -f "/boot/.${KERNEL_IMAGE##*/}-${KERNEL_VERSION}.hmac"
                 cp -a "$i" "/boot/.${KERNEL_IMAGE##*/}-${KERNEL_VERSION}.hmac"
                 command -v restorecon &>/dev/null && \
                     restorecon "/boot/.${KERNEL_IMAGE##*/}-${KERNEL_VERSION}.hmac"
@@ -92,6 +94,7 @@ case "$COMMAND" in
             INITRD="$(grep '^initrd[ \t]' "${BLS_TARGET}" | sed -e 's,^initrd[ \t]*,,')"
             LINUX_RELPATH="$(grub2-mkrelpath /boot${LINUX})"
             BOOTPREFIX="$(dirname ${LINUX_RELPATH})"
+            ROOTPREFIX="$(dirname "/boot${LINUX}")"
 
             if [[ $LINUX != $LINUX_RELPATH ]]; then
                 sed -i -e "s,^linux.*,linux ${BOOTPREFIX}${LINUX},g" "${BLS_TARGET}"
@@ -124,10 +127,10 @@ case "$COMMAND" in
             fi
 
             # this probably isn't the best place to do this, but it will do for now.
-            if [ -e "${BOOTPREFIX}${INITRD}" -a -e "${BOOTPREFIX}${LINUX}" -a \
-                 "${BOOTPREFIX}${INITRD}" -ot "${BOOTPREFIX}${LINUX}" -a \
+            if [ -e "${ROOTPREFIX}${INITRD}" -a -e "${ROOTPREFIX}${LINUX}" -a \
+                 "${ROOTPREFIX}${INITRD}" -ot "${ROOTPREFIX}${LINUX}" -a \
                  -x /usr/lib/kernel/install.d/50-dracut.install ]; then
-                rm -f "${BOOTPREFIX}${INITRD}"
+                rm -f "${ROOTPREFIX}${INITRD}"
             fi
             exit 0
         fi