diff --git a/block.c b/block.c
index 81f36b9..669e021 100644
--- a/block.c
+++ b/block.c
@@ -35,8 +35,10 @@
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <sys/ioctl.h>
+#ifndef __DragonFly__
 #include <sys/disk.h>
 #endif
+#endif
 
 #define SECTOR_BITS 9
 #define SECTOR_SIZE (1 << SECTOR_BITS)