diff --git a/src/libsystemd/sd-bus/sd-bus.c b/src/libsystemd/sd-bus/sd-bus.c
index 2758309ac5..a250e7b81a 100644
--- a/src/libsystemd/sd-bus/sd-bus.c
+++ b/src/libsystemd/sd-bus/sd-bus.c
@@ -3284,11 +3284,13 @@ static int bus_process_internal(sd_bus *bus, sd_bus_message **ret) {
                 assert_not_reached();
         }
 
-        if (ERRNO_IS_DISCONNECT(r)) {
-                bus_enter_closing(bus);
-                r = 1;
-        } else if (r < 0)
-                return r;
+        if (r < 0) {
+                if (ERRNO_IS_DISCONNECT(r)) {
+                        bus_enter_closing(bus);
+                        r = 1;
+                } else
+                        return r;
+        }
 
         if (ret)
                 *ret = NULL;