diff --git a/conf/example.conf.in b/conf/example.conf.in
index 7f0a687..39b5507 100644
--- a/conf/example.conf.in
+++ b/conf/example.conf.in
@@ -346,7 +346,7 @@ devices {
 	# or activating LVs in it while a PV appears on multiple devices.
 	# Enabling this setting allows the VG to be used as usual even with
 	# uncertain devices.
-	allow_changes_with_duplicate_pvs = 0
+	allow_changes_with_duplicate_pvs = 1
 
 	# Configuration option devices/allow_mixed_block_sizes.
 	# Allow PVs in the same VG with different logical block sizes.
diff --git a/lib/config/defaults.h b/lib/config/defaults.h
index be4f5ff..3f0539e 100644
--- a/lib/config/defaults.h
+++ b/lib/config/defaults.h
@@ -56,7 +56,7 @@
 #define DEFAULT_DATA_ALIGNMENT_DETECTION 1
 #define DEFAULT_ISSUE_DISCARDS 0
 #define DEFAULT_PV_MIN_SIZE_KB 2048
-#define DEFAULT_ALLOW_CHANGES_WITH_DUPLICATE_PVS 0
+#define DEFAULT_ALLOW_CHANGES_WITH_DUPLICATE_PVS 1
 
 #define DEFAULT_LOCKING_LIB "liblvm2clusterlock.so"
 #define DEFAULT_ERROR_WHEN_FULL 0