diff --git a/ext/mpeg2dec/Makefile.am b/ext/mpeg2dec/Makefile.am
index a34fe6d17f..68244224a9 100644
--- a/ext/mpeg2dec/Makefile.am
+++ b/ext/mpeg2dec/Makefile.am
@@ -9,8 +9,8 @@ ARCHFLAGS =
 endif
 
 libgstmpeg2dec_la_SOURCES = gstmpeg2dec.c
-libgstmpeg2dec_la_CFLAGS = $(GST_CFLAGS) -O3 $(ARCHFLAGS) $(FOMIT_FRAME_POINTER) -ffast-math
-libgstmpeg2dec_la_LIBADD = $(GST_LIBS) -lmpeg2 -lmpeg2dec
+libgstmpeg2dec_la_CFLAGS = $(GST_CFLAGS) $(MPEG2DEC_CFLAGS) $(ARCHFLAGS) $(FOMIT_FRAME_POINTER) -ffast-math
+libgstmpeg2dec_la_LIBADD = $(GST_LIBS) $(MPEG2DEC_LIBS)
 libgstmpeg2dec_la_LDFLAGS = @GST_PLUGIN_LDFLAGS@
 
 #