diff --git a/ext/cog/Makefile.am b/ext/cog/Makefile.am
index 035a44e5a9..57ff384657 100644
--- a/ext/cog/Makefile.am
+++ b/ext/cog/Makefile.am
@@ -47,7 +47,7 @@ CLEANFILES = cogorc.c cogorc.h
 EXTRA_DIST=cog.orc
 
 cogorc.c: $(srcdir)/cog.orc
-	$(AM_V_GEN)$(ORCC) --implementation -o cogorc.c $(srcdir)/cog.orc
+	$(AM_V_GEN)$(ORCC) --include cogorc.h --implementation -o cogorc.c $(srcdir)/cog.orc
 
 cogorc.h: $(srcdir)/cog.orc
 	$(AM_V_GEN)$(ORCC) --header -o cogorc.h $(srcdir)/cog.orc
diff --git a/ext/cog/cogvirtframe.c b/ext/cog/cogvirtframe.c
index 33367939ee..31d5616973 100644
--- a/ext/cog/cogvirtframe.c
+++ b/ext/cog/cogvirtframe.c
@@ -257,7 +257,7 @@ cog_virt_frame_render_downsample_horiz_cosite_3tap (CogFrame * frame,
   }
 }
 
-void
+static void
 cog_virt_frame_render_downsample_horiz_halfsite (CogFrame * frame,
     void *_dest, int component, int i)
 {
@@ -345,7 +345,7 @@ cog_virt_frame_new_horiz_downsample (CogFrame * vf, int n_taps)
   return virt_frame;
 }
 
-void
+static void
 cog_virt_frame_render_downsample_vert_cosite (CogFrame * frame,
     void *_dest, int component, int i)
 {
@@ -412,7 +412,7 @@ cog_virt_frame_render_downsample_vert_halfsite_4tap (CogFrame * frame,
 }
 
 
-void
+static void
 cog_virt_frame_render_downsample_vert_halfsite (CogFrame * frame,
     void *_dest, int component, int i)
 {
@@ -507,7 +507,7 @@ cog_virt_frame_new_vert_downsample (CogFrame * vf, int n_taps)
   return virt_frame;
 }
 
-void
+static void
 cog_virt_frame_render_resample_vert_1tap (CogFrame * frame, void *_dest,
     int component, int i)
 {
@@ -530,7 +530,7 @@ cog_virt_frame_render_resample_vert_1tap (CogFrame * frame, void *_dest,
   orc_memcpy (dest, src1, frame->components[component].width);
 }
 
-void
+static void
 cog_virt_frame_render_resample_vert_2tap (CogFrame * frame, void *_dest,
     int component, int i)
 {
@@ -561,7 +561,7 @@ cog_virt_frame_render_resample_vert_2tap (CogFrame * frame, void *_dest,
   }
 }
 
-void
+static void
 cog_virt_frame_render_resample_vert_4tap (CogFrame * frame, void *_dest,
     int component, int i)
 {
@@ -624,7 +624,7 @@ cog_virt_frame_new_vert_resample (CogFrame * vf, int height, int n_taps)
   return virt_frame;
 }
 
-void
+static void
 cog_virt_frame_render_resample_horiz_1tap (CogFrame * frame, void *_dest,
     int component, int i)
 {
@@ -645,7 +645,7 @@ cog_virt_frame_render_resample_horiz_1tap (CogFrame * frame, void *_dest,
   }
 }
 
-void
+static void
 cog_virt_frame_render_resample_horiz_2tap (CogFrame * frame, void *_dest,
     int component, int i)
 {
@@ -692,7 +692,7 @@ cog_virt_frame_render_resample_horiz_2tap (CogFrame * frame, void *_dest,
   }
 }
 
-void
+static void
 cog_virt_frame_render_resample_horiz_4tap (CogFrame * frame, void *_dest,
     int component, int i)
 {
diff --git a/ext/cog/generate_tables.c b/ext/cog/generate_tables.c
index 2bc8dc1c6b..d775bcc216 100644
--- a/ext/cog/generate_tables.c
+++ b/ext/cog/generate_tables.c
@@ -8,7 +8,7 @@
 
 #define SCALE 256
 
-void
+static void
 get_taps (double *taps, double x)
 {
   taps[3] = x * x * (x - 1);
diff --git a/ext/cog/gstcogmse.c b/ext/cog/gstcogmse.c
index d14fb1b9ba..cf4e77ccdb 100644
--- a/ext/cog/gstcogmse.c
+++ b/ext/cog/gstcogmse.c
@@ -74,6 +74,9 @@ struct _GstMSEClass
   GstElementClass parent;
 };
 
+GType gst_mse_get_type (void);
+
+
 enum
 {
   PROP_0,
diff --git a/ext/cog/gstcogutils.c b/ext/cog/gstcogutils.c
index da37d95738..4d7c8b99f0 100644
--- a/ext/cog/gstcogutils.c
+++ b/ext/cog/gstcogutils.c
@@ -21,6 +21,8 @@
 #include "config.h"
 #endif
 
+#include "gstcogutils.h"
+
 #include <gst/gst.h>
 #include <gst/video/video.h>
 #include <cog/cog.h>