diff --git a/ext/opus/Makefile.am b/ext/opus/Makefile.am
index cdf3c30ac1..1aaed79247 100644
--- a/ext/opus/Makefile.am
+++ b/ext/opus/Makefile.am
@@ -4,6 +4,7 @@ libgstopus_la_SOURCES = gstopus.c gstopusdec.c gstopusenc.c gstopusparse.c gstop
 libgstopus_la_CFLAGS = \
         -DGST_USE_UNSTABLE_API \
 	$(GST_PLUGINS_BASE_CFLAGS) \
+	$(GST_PLUGINS_BAD_CFLAGS) \
 	$(GST_CFLAGS) \
 	$(OPUS_CFLAGS)
 libgstopus_la_LIBADD = \
diff --git a/ext/opus/gstopusenc.c b/ext/opus/gstopusenc.c
index 9b475cf8c7..29b254ee23 100644
--- a/ext/opus/gstopusenc.c
+++ b/ext/opus/gstopusenc.c
@@ -48,6 +48,7 @@
 
 #include <gst/gsttagsetter.h>
 #include <gst/audio/audio.h>
+#include <gst/glib-compat-private.h>
 #include "gstopusheader.h"
 #include "gstopuscommon.h"
 #include "gstopusenc.h"