diff --git a/ext/x264/gstx264enc.h b/ext/x264/gstx264enc.h
index 732e12484c..6f4ad4839e 100644
--- a/ext/x264/gstx264enc.h
+++ b/ext/x264/gstx264enc.h
@@ -30,6 +30,13 @@
 #include <stdint.h>
 #endif
 
+/* The x264.h header says this isn't needed with MinGW, but sometimes the
+ * compiler is unable to correctly do the pointer indirection for us, which
+ * leads to a segfault when you try to dereference any const values provided
+ * by x264.dll. See: https://bugzilla.gnome.org/show_bug.cgi?id=779249 */
+#if defined(_WIN32) && !defined(X264_API_IMPORTS)
+# define X264_API_IMPORTS
+#endif
 #include <x264.h>
 
 G_BEGIN_DECLS