diff --git a/gst/gdp/dataprotocol.c b/gst/gdp/dataprotocol.c
index 721cc60c64..0afd41054b 100644
--- a/gst/gdp/dataprotocol.c
+++ b/gst/gdp/dataprotocol.c
@@ -128,7 +128,7 @@ G_STMT_START {							\
 /*** HELPER FUNCTIONS ***/
 
 static gboolean
-gst_dp_header_from_buffer_any (const GstBuffer * buffer, GstDPHeaderFlag flags,
+gst_dp_header_from_buffer_any (GstBuffer * buffer, GstDPHeaderFlag flags,
     guint * length, guint8 ** header, GstDPVersion version)
 {
   guint8 *h;
@@ -351,7 +351,7 @@ gst_dp_header_payload_type (const guint8 * header)
 /*** PACKETIZER FUNCTIONS ***/
 
 static gboolean
-gst_dp_header_from_buffer_1_0 (const GstBuffer * buffer, GstDPHeaderFlag flags,
+gst_dp_header_from_buffer_1_0 (GstBuffer * buffer, GstDPHeaderFlag flags,
     guint * length, guint8 ** header)
 {
   return gst_dp_header_from_buffer_any (buffer, flags, length, header,
diff --git a/gst/gdp/dataprotocol.h b/gst/gdp/dataprotocol.h
index 3812ff035c..1370c65574 100644
--- a/gst/gdp/dataprotocol.h
+++ b/gst/gdp/dataprotocol.h
@@ -97,7 +97,7 @@ typedef enum {
   GST_DP_PAYLOAD_EVENT_NONE      = 64,
 } GstDPPayloadType;
 
-typedef gboolean (*GstDPHeaderFromBufferFunction) (const GstBuffer * buffer,
+typedef gboolean (*GstDPHeaderFromBufferFunction) (GstBuffer * buffer,
                                                    GstDPHeaderFlag flags,
                                                    guint * length,
                                                    guint8 ** header);