diff --git a/gst-libs/gst/codecparsers/Makefile.am b/gst-libs/gst/codecparsers/Makefile.am
index 65a34cb716..eff6e8365c 100644
--- a/gst-libs/gst/codecparsers/Makefile.am
+++ b/gst-libs/gst/codecparsers/Makefile.am
@@ -19,7 +19,10 @@ libgstcodecparsers_@GST_API_VERSION@include_HEADERS = \
 libgstcodecparsers_@GST_API_VERSION@_la_CFLAGS = \
 	$(GST_PLUGINS_BAD_CFLAGS) \
 	-DGST_USE_UNSTABLE_API \
-	$(GST_CFLAGS)
+	$(GST_CFLAGS) \
+	-Dvp8_norm=gst_codecparsers_vp8_norm \
+	-Dvp8dx_start_decode=gst_codecparsers_vp8dx_start_decode \
+	-Dvp8dx_bool_decoder_fill=gst_codecparsers_vp8dx_bool_decoder_fill
 
 libgstcodecparsers_@GST_API_VERSION@_la_LIBADD = \
 	$(GST_BASE_LIBS) \