diff --git a/super-ddf.c b/super-ddf.c
index a5852a7..8bba70a 100644
--- a/super-ddf.c
+++ b/super-ddf.c
@@ -47,6 +47,10 @@ unsigned long crc32(
 #define DDF_NOTFOUND (~0U)
 #define DDF_CONTAINER (DDF_NOTFOUND-1)
 
+/* Default for safe_mode_delay. Same value as for IMSM.
+ */
+static const int DDF_SAFE_MODE_DELAY = 4000;
+
 /* The DDF metadata handling.
  * DDF metadata lives at the end of the device.
  * The last 512 byte block provides an 'anchor' which is used to locate
@@ -1976,7 +1980,7 @@ static void getinfo_super_ddf_bvd(struct supertype *st, struct mdinfo *info, cha
 	sprintf(info->text_version, "/%s/%d",
 		st->container_devnm,
 		info->container_member);
-	info->safe_mode_delay = 200;
+	info->safe_mode_delay = DDF_SAFE_MODE_DELAY;
 
 	memcpy(info->name, ddf->virt->entries[info->container_member].name, 16);
 	info->name[16]=0;
@@ -3668,7 +3672,7 @@ static struct mdinfo *container_content_ddf(struct supertype *st, char *subarray
 		this->array.md_minor      = -1;
 		this->array.major_version = -1;
 		this->array.minor_version = -2;
-		this->safe_mode_delay = 200;
+		this->safe_mode_delay = DDF_SAFE_MODE_DELAY;
 		cptr = (__u32 *)(vc->conf.guid + 16);
 		this->array.ctime         = DECADE + __be32_to_cpu(*cptr);
 		this->array.utime	  = DECADE +