diff --git a/scst/include/scst.h b/scst/include/scst.h
index f510f0dd0..0a058d393 100644
--- a/scst/include/scst.h
+++ b/scst/include/scst.h
@@ -71,6 +71,12 @@ typedef _Bool bool;
 #define __aligned __attribute__((aligned))
 #endif
 
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 32)
+#ifndef O_DSYNC
+#define O_DSYNC O_SYNC
+#endif
+#endif
+
 #ifdef INSIDE_KERNEL_TREE
 #include <scst/scst_sgv.h>
 #else