diff --git a/tests/compat-test b/tests/compat-test
index 0feabbf8..8c7b6c17 100755
--- a/tests/compat-test
+++ b/tests/compat-test
@@ -418,7 +418,7 @@ echo -e "$PWD1\n$PWD2\n" | $CRYPTSETUP luksAddKey $FAST_PBKDF_OPT $LOOPDEV --key
 echo $PWD2 | $CRYPTSETUP luksOpen $LOOPDEV --test-passphrase --key-slot 1 || fail
 $CRYPTSETUP luksDump $LOOPDEV | grep -q "Key Slot 1: ENABLED" || fail
 # keyfile/passphrase
-echo -e "$PWD2\n" | $CRYPTSETUP luksAddKey $FAST_PBKDF_OPT $LOOPDEV $KEY1 --key-slot 2 --new-keyfile-size 1 || fail
+echo -e "$PWD2\n" | $CRYPTSETUP luksAddKey $FAST_PBKDF_OPT $LOOPDEV $KEY1 --key-slot 2 --new-keyfile-size 3 || fail
 $CRYPTSETUP luksDump $LOOPDEV | grep -q "Key Slot 2: ENABLED" || fail
 
 prepare "[18] RemoveKey passphrase and keyfile" reuse
diff --git a/tests/compat-test2 b/tests/compat-test2
index 6ebc6e06..633e0591 100755
--- a/tests/compat-test2
+++ b/tests/compat-test2
@@ -333,7 +333,7 @@ echo -e "$PWD1\n$PWD2\n" | $CRYPTSETUP luksAddKey $FAST_PBKDF_OPT $LOOPDEV --key
 echo $PWD2 | $CRYPTSETUP luksOpen $LOOPDEV --test-passphrase --key-slot 1 || fail
 $CRYPTSETUP luksDump $LOOPDEV | grep -q "1: luks2" || fail
 # keyfile/passphrase
-echo -e "$PWD2\n" | $CRYPTSETUP luksAddKey $FAST_PBKDF_OPT $LOOPDEV $KEY1 --key-slot 2 --new-keyfile-size 1 || fail
+echo -e "$PWD2\n" | $CRYPTSETUP luksAddKey $FAST_PBKDF_OPT $LOOPDEV $KEY1 --key-slot 2 --new-keyfile-size 3 || fail
 $CRYPTSETUP luksDump $LOOPDEV | grep -q "2: luks2" || fail
 
 prepare "[18] RemoveKey passphrase and keyfile" reuse