diff --git a/heifio/stubs.cc b/heifio/stubs.cc
index 22811cced2..b1facb614a 100644
--- a/heifio/stubs.cc
+++ b/heifio/stubs.cc
@@ -24,6 +24,10 @@
   SOFTWARE.
 */
 
+#include "libheif/heif.h"
+#include "decoder.h"
+
+
 #if !HAVE_LIBJPEG
 heif_error loadJPEG(const char *filename, InputImage *input_image)
 {