diff --git a/gst/dvdspu/gstspu-pgs.c b/gst/dvdspu/gstspu-pgs.c
index b860b290b9..a244ac9932 100644
--- a/gst/dvdspu/gstspu-pgs.c
+++ b/gst/dvdspu/gstspu-pgs.c
@@ -81,8 +81,9 @@ dump_bytes (guint8 * data, guint16 len)
 static void
 dump_rle_data (GstDVDSpu * dvdspu, guint8 * data, guint32 len)
 {
+  guint16 obj_h G_GNUC_UNUSED;
+  guint16 obj_w;
   guint8 *end = data + len;
-  guint16 obj_w, obj_h;
   guint x = 0;
 
   if (data + 4 > end)
@@ -175,7 +176,8 @@ pgs_composition_object_render (PgsCompositionObject * obj, SpuState * state,
   SpuColour *colour;
   guint8 *planes[3];            /* YUV frame pointers */
   guint8 *data, *end;
-  guint16 obj_w, obj_h;
+  guint16 obj_w;
+  guint16 obj_h G_GNUC_UNUSED;
   guint x, y, i, min_x, max_x;
 
   if (G_UNLIKELY (obj->rle_data == NULL || obj->rle_data_size == 0
@@ -461,8 +463,8 @@ parse_set_palette (GstDVDSpu * dvdspu, guint8 type, guint8 * payload,
 
   const gint PGS_PALETTE_ENTRY_SIZE = 5;
   guint8 *end = payload + len;
-  guint8 palette_id;
-  guint8 palette_version;
+  guint8 palette_id G_GNUC_UNUSED;
+  guint8 palette_version G_GNUC_UNUSED;
   gint n_entries, i;
 
   if (len < 2)                  /* Palette command too short */
@@ -520,7 +522,7 @@ parse_set_window (GstDVDSpu * dvdspu, guint8 type, guint8 * payload,
 {
   SpuState *state = &dvdspu->spu_state;
   guint8 *end = payload + len;
-  guint8 win_count, win_id;
+  guint8 win_count, win_id G_GNUC_UNUSED;
   gint i;
 
   if (payload + 1 > end)
diff --git a/gst/invtelecine/gstinvtelecine.c b/gst/invtelecine/gstinvtelecine.c
index 50daab9ea8..8e0a5929de 100644
--- a/gst/invtelecine/gstinvtelecine.c
+++ b/gst/invtelecine/gstinvtelecine.c
@@ -425,7 +425,7 @@ gst_invtelecine_compare_fields_mse_ave (GstInvtelecine * invtelecine,
   guint8 *data2_1;
   guint8 *data2_2;
   int field_index1;
-  int field_index2;
+  int field_index2 G_GNUC_UNUSED;       /* FIXME: should it be used? */
   double diff;
   double sum;
   double linesum;
diff --git a/gst/jpegformat/gstjpegparse.c b/gst/jpegformat/gstjpegparse.c
index 1542b6ed38..64b16ae223 100644
--- a/gst/jpegformat/gstjpegparse.c
+++ b/gst/jpegformat/gstjpegparse.c
@@ -438,8 +438,8 @@ gst_jpeg_parse_sof (GstJpegParse * parse, GstByteReader * reader)
   guint8 numcomps = 0;          /* Number of components in image
                                    (1 for gray, 3 for YUV, etc.) */
   guint8 precision;             /* precision (in bits) for the samples */
-  guint8 compId[3];             /* unique value identifying each component */
-  guint8 qtId[3];               /* quantization table ID to use for this comp */
+  guint8 compId[3] G_GNUC_UNUSED;       /* unique value identifying each component */
+  guint8 qtId[3] G_GNUC_UNUSED; /* quantization table ID to use for this comp */
   guint8 blockWidth[3];         /* Array[numComponents] giving the number of
                                    blocks (horiz) in this component */
   guint8 blockHeight[3];        /* Same for the vertical part of this component */
@@ -464,7 +464,7 @@ gst_jpeg_parse_sof (GstJpegParse * parse, GstByteReader * reader)
   if (!gst_byte_reader_get_uint8 (reader, &numcomps))
     return FALSE;
 
-  if (numcomps > 3)
+  if (numcomps > 3)             /* FIXME */
     return FALSE;
 
   /* Get decimation and quantization table id for each component */
diff --git a/gst/librfb/rfbdecoder.c b/gst/librfb/rfbdecoder.c
index 53de8d14aa..7122e77d4f 100644
--- a/gst/librfb/rfbdecoder.c
+++ b/gst/librfb/rfbdecoder.c
@@ -803,8 +803,8 @@ static void
 rfb_decoder_hextile_encoding (RfbDecoder * decoder, gint start_x, gint start_y,
     gint rect_w, gint rect_h)
 {
-  gint32 x, x_count, x_end, x_max, x_max_16;
-  gint32 y, y_count, y_end, y_max, y_max_16;
+  gint32 x, x_count G_GNUC_UNUSED, x_end, x_max, x_max_16;
+  gint32 y, y_count G_GNUC_UNUSED, y_end, y_max, y_max_16;
   guint8 subencoding, nr_subrect, xy, wh;
   guint32 background, foreground;
 
diff --git a/gst/mpegdemux/gstmpegtsdemux.c b/gst/mpegdemux/gstmpegtsdemux.c
index 2c5c6cc1e0..986914d0c9 100644
--- a/gst/mpegdemux/gstmpegtsdemux.c
+++ b/gst/mpegdemux/gstmpegtsdemux.c
@@ -2253,11 +2253,11 @@ gst_mpegts_demux_parse_stream (GstMpegTSDemux * demux, GstMpegTSStream * stream,
     const guint8 * in_data, guint in_size)
 {
   GstFlowReturn ret;
-  gboolean transport_error_indicator;
+  gboolean transport_error_indicator G_GNUC_UNUSED;
+  gboolean transport_priority G_GNUC_UNUSED;
   gboolean payload_unit_start_indicator;
-  gboolean transport_priority;
   guint16 PID;
-  guint8 transport_scrambling_control;
+  guint8 transport_scrambling_control G_GNUC_UNUSED;
   guint8 adaptation_field_control;
   guint8 continuity_counter;
   const guint8 *data = in_data;
diff --git a/gst/mpegdemux/gstpesfilter.c b/gst/mpegdemux/gstpesfilter.c
index 736d4960b6..18d503608c 100644
--- a/gst/mpegdemux/gstpesfilter.c
+++ b/gst/mpegdemux/gstpesfilter.c
@@ -112,7 +112,7 @@ gst_pes_filter_parse (GstPESFilter * filter)
   GstFlowReturn ret;
   guint32 start_code;
 
-  gboolean STD_buffer_bound_scale;
+  gboolean STD_buffer_bound_scale G_GNUC_UNUSED;
   guint16 STD_buffer_size_bound;
   const guint8 *data;
   gint avail, datalen;
diff --git a/gst/mpegdemux/mpegtspacketizer.c b/gst/mpegdemux/mpegtspacketizer.c
index 335c985082..94ffd9472d 100644
--- a/gst/mpegdemux/mpegtspacketizer.c
+++ b/gst/mpegdemux/mpegtspacketizer.c
@@ -356,7 +356,8 @@ mpegts_packetizer_parse_descriptors (MpegTSPacketizer * packetizer,
     /* include tag and length */
     desc = g_string_new_len ((gchar *) data - 2, length + 2);
     data += length;
-    /* G_TYPE_GSTING is a GBoxed type and is used so properly marshalled from python */
+    /* G_TYPE_GSTRING is a GBoxed type and is used so properly marshalled from
+     * python (FIXME: should either be G_TYPE_STRING or GST_TYPE_BUFFFER) */
     g_value_init (&value, G_TYPE_GSTRING);
     g_value_take_boxed (&value, desc);
     g_value_array_append (descriptors, &value);