diff --git a/sys/arm/include/vmparam.h b/sys/arm/include/vmparam.h
index 09bf62ce3c4..53c40d203f8 100644
--- a/sys/arm/include/vmparam.h
+++ b/sys/arm/include/vmparam.h
@@ -178,4 +178,8 @@ extern vm_offset_t vm_max_kernel_address;
 
 #define	ZERO_REGION_SIZE	(64 * 1024)	/* 64KB */
 
+#ifndef VM_MAX_AUTOTUNE_MAXUSERS
+#define	VM_MAX_AUTOTUNE_MAXUSERS	384
+#endif
+
 #endif	/* _MACHINE_VMPARAM_H_ */