diff --git a/kdump_dracut_modules/99kdumpbase/kdump.sh b/kdump_dracut_modules/99kdumpbase/kdump.sh
index b2087dc..d417b3c 100755
--- a/kdump_dracut_modules/99kdumpbase/kdump.sh
+++ b/kdump_dracut_modules/99kdumpbase/kdump.sh
@@ -26,12 +26,7 @@ do_default_action()
 
 add_dump_code()
 {
-    if [ -z "$DUMP_INSTRUCTION" ]
-    then
-        DUMP_INSTRUCTION="$1"
-    else
-        DUMP_INSTRUCTION="$DUMP_INSTRUCTION && $1"
-    fi
+    DUMP_INSTRUCTION="$1"
 }
 
 get_mp()
diff --git a/kdumpctl b/kdumpctl
index 842afa3..420265f 100755
--- a/kdumpctl
+++ b/kdumpctl
@@ -283,6 +283,13 @@ function status()
 
 function start()
 {
+	local nr
+	nr=$(awk 'BEGIN{cnt=0} /^raw|^net|^ext[234]|^xfs|^btrfs|^minix/{cnt++} END{print cnt}' $KDUMP_CONFIG_FILE)
+	[ $nr -gt 1 ] && {
+		echo -n "Error: More than one dump targets specified"; echo
+		return 1
+	}
+
 	#TODO check raw partition for core dump image
 	status 
 	rc=$?