fix spelling error

diff --git a/src/plugins_d.c b/src/plugins_d.c
index 09295fb49196937e6a4ec7cc17edd8db6bc675ec..93dd29d6e2d5bbf7b584456305be13bb7072d9c0 100755 (executable)
--- a/src/plugins_d.c
+++ b/src/plugins_d.c
@@ -406,7 +406,7 @@ void *pluginsd_worker_thread(void *arg)
                }
 
                if(unlikely(!count && cd->enabled)) {
-                       error("PLUGINSD: '%s' (pid %d) does not generate usefull output. Waiting a bit before starting it again.", cd->fullfilename, cd->pid);
+                       error("PLUGINSD: '%s' (pid %d) does not generate useful output. Waiting a bit before starting it again.", cd->fullfilename, cd->pid);
                        sleep((unsigned int) (cd->update_every * 10));
                }