diff --git a/extras/test/00_create.sh b/extras/test/00_create.sh
index ca0c453..5794af9 100644
--- a/extras/test/00_create.sh
+++ b/extras/test/00_create.sh
@@ -30,7 +30,7 @@ fi
 if test_have_prereq BTRFS; then
     test_export "create_btrfs"
     test_expect_success 'Testing tomb creation using BTRFS filesystem' '
-    tt_dig -s 50 &&
+    tt_dig -s 120 &&
     tt_forge --tomb-pwd $DUMMYPASS &&
     print $DUMMYPASS \
         | gpg --batch --passphrase-fd 0 --no-tty --no-options -d $tomb_key \
diff --git a/tomb b/tomb
index db22c8f..a86f72b 100755
--- a/tomb
+++ b/tomb
@@ -2072,15 +2072,15 @@ lock_tomb_with_key() {
 			ext3|ext4) ;;
 			ext3maxinodes|ext4maxinodes) ;;
 			btrfs)
-				if [[ $tombsize -lt 49283072 ]]; then
-					_failure "Filesystem ::1 filesystem:: not supported on tombs smaller than 47MB." \
-						 $filesystem
+				if [[ $tombsize -lt 114294784 ]]; then
+					_failure "Filesystem ::1 filesystem:: not supported on tombs smaller than ::2 size::" \
+						 $filesystem "114MB"
 				fi
 				;;
 			btrfsmixedmode)
 				if [[ $tombsize -lt 18874368 ]]; then
-					_failure "Filesystem ::1 filesystem:: not supported on tombs smaller than 18MB." \
-						 $filesystem
+					_failure "Filesystem ::1 filesystem:: not supported on tombs smaller than ::2 size::" \
+						 $filesystem "18MB"
 				fi
 				;;
 			*)