diff --git a/libvo/vo_directfb.c b/libvo/vo_directfb.c
index be605c8bb4..618e34e0b2 100644
--- a/libvo/vo_directfb.c
+++ b/libvo/vo_directfb.c
@@ -235,7 +235,7 @@ DFBEnumerationResult enum_layers_callback( unsigned int                 id,
      return DFENUM_OK;
 }
 
-static uint32_t preinit()
+static uint32_t preinit(const char *arg)
 {
      DFBSurfaceDescription dsc;
      DFBResult             ret;
@@ -357,7 +357,7 @@ static uint32_t init(uint32_t width, uint32_t height, uint32_t d_width,
 	}
 
 
-        if (!preinit()) return 1;
+        if (!preinit(NULL)) return 1;
 
 
   if (vm) {
@@ -598,7 +598,7 @@ static uint32_t query_format(uint32_t format)
 {
 	int ret = 0x4; /* osd/sub is supported on every bpp */
 
-        preinit();
+        preinit(NULL);
 
 //        printf("Format query: %s\n",vo_format_name(format));
 	switch (format) {
@@ -888,11 +888,6 @@ static void uninit(void)
 
 }
 
-static uint32_t preinit(const char *arg)
-{
-  return 0;
-}
-
 static void query_vaa(vo_vaa_t *vaa)
 {
   memset(vaa,0,sizeof(vo_vaa_t));