Index: frontend/scanimage.c
--- frontend/scanimage.c.orig
+++ frontend/scanimage.c
@@ -40,7 +40,7 @@
 #include <unistd.h>
 #include <stdarg.h>
 
-#ifdef __FreeBSD__
+#if defined(__FreeBSD__) || defined(__OpenBSD__)
 #include <libgen.h>
 #endif