diff --git a/Modules/sunaudiodev.c b/Modules/sunaudiodev.c
index d8b04ff..43ccf48 100644
--- a/Modules/sunaudiodev.c
+++ b/Modules/sunaudiodev.c
@@ -39,6 +39,14 @@
 #define SOLARIS
 #endif
 
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+#ifdef HAVE_FCNTL_H
+#include <fcntl.h>
+#endif
+
 #include <stropts.h>
 #include <sys/ioctl.h>
 #ifdef SOLARIS
@@ -69,8 +77,6 @@
 
 static object *SunAudioError;
 
-static int dummy_for_dl;
-
 #define is_sadobject(v)		((v)->ob_type == &Sadtype)
 #define is_sadstatusobject(v)	((v)->ob_type == &Sadstatustype)