diff --git a/main.cpp b/main.cpp
index 7211c9b77e..c67b2ba884 100644
--- a/main.cpp
+++ b/main.cpp
@@ -66,7 +66,7 @@ int x11ErrorHandler(Display *d, XErrorEvent *e){
 	 || e->request_code == X_GrabKey
 	 )
 	&& (e->error_code == BadAccess)) {
-	fprintf(stderr, i18n("kwin: it looks like there's already a window manager running. kwin not started.\n").local8Bit());
+	fputs(i18n("kwin: it looks like there's already a window manager running. kwin not started.\n").local8Bit(), stderr);
 	exit(1);
     }
 
@@ -80,7 +80,7 @@ int x11ErrorHandler(Display *d, XErrorEvent *e){
     fprintf(stderr, "kwin: %s(0x%lx): %s\n", req, e->resourceid, msg);
 
     if (initting) {
-        fprintf(stderr, i18n("kwin: failure during initialization; aborting").local8Bit());
+        fputs(i18n("kwin: failure during initialization; aborting").local8Bit(), stderr);
         exit(1);
     }
     return 0;
diff --git a/plugins.cpp b/plugins.cpp
index 1f8c8a6edd..5b60f10da9 100644
--- a/plugins.cpp
+++ b/plugins.cpp
@@ -158,8 +158,8 @@ bool PluginMgr::loadPlugin(QString nameStr)
 
 void PluginMgr::shutdownKWin(const QString &error_msg)
 {
-    qWarning( (i18n("KWin: ") + error_msg +
-               i18n("\nKWin will now exit...")).latin1() );
+    qWarning( "%s", (i18n("KWin: ") + error_msg +
+                    i18n("\nKWin will now exit...")).latin1() );
     exit(1);
 }