diff --git a/MediaPlayer.cpp b/MediaPlayer.cpp
index 9b3b361..1506488 100644
--- a/MediaPlayer.cpp
+++ b/MediaPlayer.cpp
@@ -366,9 +366,6 @@ void MediaPlayer::seekTo(GstClockTime pos)
     if (!seekable_)
         return;
 
-    // remember pos
-    GstClockTime previous_pos = position();
-
     // apply seek
     GstClockTime target = CLAMP(pos, 0, duration_);
     execute_seek_command(target);
@@ -674,7 +671,7 @@ GstFlowReturn MediaPlayer::callback_pull_sample_video (GstElement *bin, MediaPla
     return ret;
 }
 
-void MediaPlayer::callback_end_of_video (GstElement *bin, MediaPlayer *m)
+void MediaPlayer::callback_end_of_video (GstElement *, MediaPlayer *m)
 {
     if (m) {
         // reached end of stream (eos) : might need to loop !
@@ -684,7 +681,7 @@ void MediaPlayer::callback_end_of_video (GstElement *bin, MediaPlayer *m)
 
 void MediaPlayer::callback_discoverer_process (GstDiscoverer *discoverer, GstDiscovererInfo *info, GError *err, MediaPlayer *m)
 {
-    if (!m)
+    if (!discoverer || !m)
         return;
 
     // handle general errors
@@ -775,7 +772,7 @@ void MediaPlayer::callback_discoverer_process (GstDiscoverer *discoverer, GstDis
 void MediaPlayer::callback_discoverer_finished(GstDiscoverer *discoverer, MediaPlayer *m)
 {
     // finished the discoverer : finalize open status
-    if (m) {
+    if (discoverer && m) {
         // no error message, open media
         if ( m->discoverer_message_.str().empty())
             m->execute_open();
diff --git a/MediaPlayer.h b/MediaPlayer.h
index 30e6fc3..6054db5 100644
--- a/MediaPlayer.h
+++ b/MediaPlayer.h
@@ -254,9 +254,9 @@ private:
     bool fill_v_frame(GstBuffer *buf);
 
     static GstFlowReturn callback_pull_sample_video (GstElement *bin, MediaPlayer *m);
-    static void callback_end_of_video (GstElement *bin, MediaPlayer *m);
-    static void callback_discoverer_process (GstDiscoverer *discoverer_, GstDiscovererInfo *info, GError *err, MediaPlayer *m);
-    static void callback_discoverer_finished(GstDiscoverer *discoverer_, MediaPlayer *m);
+    static void callback_end_of_video (GstElement *, MediaPlayer *m);
+    static void callback_discoverer_process (GstDiscoverer *discoverer, GstDiscovererInfo *info, GError *err, MediaPlayer *m);
+    static void callback_discoverer_finished(GstDiscoverer *discoverer, MediaPlayer *m);
 
 };
 
diff --git a/Resource.cpp b/Resource.cpp
index 0e0bba6..2842c6f 100644
--- a/Resource.cpp
+++ b/Resource.cpp
@@ -122,7 +122,6 @@ uint Resource::getTextureDDS(const std::string& path, float *aspect_ratio)
 	// get the buffer = bytes [128 - ]
 	const char *buffer = fp + 128;
 
-    uint components  = (fourCC == FOURCC_DXT1) ? 3 : 4;
     uint format = 0;
 	switch(fourCC)
 	{
@@ -163,8 +162,7 @@ uint Resource::getTextureDDS(const std::string& path, float *aspect_ratio)
     for (uint level = 0; level < mipMapCount && (width || height); ++level)
 	{
         uint size = ((width+3)/4)*((height+3)/4)*blockSize;
-		glCompressedTexImage2D(GL_TEXTURE_2D, level, format, width, height,
-			0, size, buffer + offset);
+        glCompressedTexImage2D(GL_TEXTURE_2D, level, format, width, height, 0, size, buffer + offset);
 		glGenerateMipmap(GL_TEXTURE_2D);
 
 		offset += size;