diff --git a/sbin/geom/class/part/gpart.8 b/sbin/geom/class/part/gpart.8
index 878841e4b188..e8c4dab2f43b 100644
--- a/sbin/geom/class/part/gpart.8
+++ b/sbin/geom/class/part/gpart.8
@@ -1176,7 +1176,7 @@ If this variable set to 1 each component of the mirrored volume will be
 present as independent partition.
 .Em NOTE :
 This may break a mirrored volume and lead to data damage.
-.It Va kern.geom.part.mbr.enforce_chs : No 1
+.It Va kern.geom.part.mbr.enforce_chs : No 0
 Specify how the Master Boot Record (MBR) module does alignment.
 If this variable is set to a non-zero value, the module will automatically
 recalculate the user-specified offset and size for alignment with the CHS
diff --git a/sys/geom/part/g_part_mbr.c b/sys/geom/part/g_part_mbr.c
index 8b32778d23df..5073398c954c 100644
--- a/sys/geom/part/g_part_mbr.c
+++ b/sys/geom/part/g_part_mbr.c
@@ -53,9 +53,9 @@ SYSCTL_DECL(_kern_geom_part);
 static SYSCTL_NODE(_kern_geom_part, OID_AUTO, mbr, CTLFLAG_RW, 0,
     "GEOM_PART_MBR Master Boot Record");
 
-static u_int enforce_chs = 1;
+static u_int enforce_chs = 0;
 SYSCTL_UINT(_kern_geom_part_mbr, OID_AUTO, enforce_chs,
-    CTLFLAG_RWTUN, &enforce_chs, 1, "Enforce alignment to CHS addressing");
+    CTLFLAG_RWTUN, &enforce_chs, 0, "Enforce alignment to CHS addressing");
 
 #define	MBRSIZE		512