diff --git a/server.h b/server.h
index aefd418..5d9b6cc 100644
--- a/server.h
+++ b/server.h
@@ -38,7 +38,7 @@
 };
 
 enum {
-	FIO_SERVER_VER			= 25,
+	FIO_SERVER_VER			= 26,
 
 	FIO_SERVER_MAX_FRAGMENT_PDU	= 1024,
 
diff --git a/thread_options.h b/thread_options.h
index 3f345c5..484b16a 100644
--- a/thread_options.h
+++ b/thread_options.h
@@ -157,7 +157,7 @@
 #endif
 	unsigned int iolog;
 	unsigned int rwmixcycle;
-	unsigned int rwmix[2];
+	unsigned int rwmix[DDIR_RWDIR_CNT];
 	unsigned int nice;
 	unsigned int ioprio;
 	unsigned int ioprio_class;
@@ -362,7 +362,7 @@
 	uint32_t verify_cpumask_set;
 	uint32_t iolog;
 	uint32_t rwmixcycle;
-	uint32_t rwmix[2];
+	uint32_t rwmix[DDIR_RWDIR_CNT];
 	uint32_t nice;
 	uint32_t ioprio;
 	uint32_t ioprio_class;