diff --git a/src/memtest.c b/src/memtest.c
index e424e528b..39fc4fcaa 100644
--- a/src/memtest.c
+++ b/src/memtest.c
@@ -35,7 +35,9 @@
 #include <errno.h>
 #include <termios.h>
 #include <sys/ioctl.h>
+#if defined(__sun)
 #include <stropts.h>
+#endif
 #include "config.h"
 
 #if (ULONG_MAX == 4294967295UL)