diff --git a/pm/sleep.d/55NetworkManager b/pm/sleep.d/55NetworkManager
index f3c6df5..8675eeb 100755
--- a/pm/sleep.d/55NetworkManager
+++ b/pm/sleep.d/55NetworkManager
@@ -11,11 +11,12 @@
 suspend_nm()
 {
 	# Tell NetworkManager to shut down networking
-        printf "Having NetworkManager put all interaces to sleep..."
-	dbus_send --system                         \
+	printf "Having NetworkManager put all interaces to sleep..."
+	dbus_send --system --print-reply               \
 		--dest=org.freedesktop.NetworkManager  \
 		/org/freedesktop/NetworkManager        \
-		org.freedesktop.NetworkManager.sleep && \
+		org.freedesktop.NetworkManager.Sleep   \
+		boolean:true &&                        \
 	    echo Done. || echo Failed.
 }
 
@@ -23,10 +24,11 @@ resume_nm()
 {
 	# Wake up NetworkManager and make it do a new connection
 	printf "Having NetworkManager wake interfaces back up..."
-        dbus_send --system                        \
-		--dest=org.freedesktop.NetworkManager \
-		/org/freedesktop/NetworkManager       \
-		org.freedesktop.NetworkManager.wake && \
+	dbus_send --system --print-reply               \
+		--dest=org.freedesktop.NetworkManager  \
+		/org/freedesktop/NetworkManager        \
+		org.freedesktop.NetworkManager.Sleep   \
+		boolean:false &&                       \
 	    echo Done. || echo Failed.
 }