diff --git a/ext/ladspa/gstladspa.c b/ext/ladspa/gstladspa.c
index 11bfd0f0c0..2536e01d1a 100644
--- a/ext/ladspa/gstladspa.c
+++ b/ext/ladspa/gstladspa.c
@@ -18,6 +18,9 @@
  * Boston, MA 02111-1307, USA.
  */
 
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
 #include <string.h>
 #include <math.h>
 #include <gst/control/control.h>
diff --git a/ext/sndfile/gstsf.c b/ext/sndfile/gstsf.c
index a0dbde3a80..a6d7c28db1 100644
--- a/ext/sndfile/gstsf.c
+++ b/ext/sndfile/gstsf.c
@@ -18,6 +18,9 @@
  */
 
 
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
 #include <string.h>
 #include <gst/gst.h>