diff --git a/test/test_key.c b/test/test_key.c
index 0c2d49a4..a417f890 100644
--- a/test/test_key.c
+++ b/test/test_key.c
@@ -171,20 +171,22 @@ static void test_encode_eddsa(void **state) {
 int main() {
   struct lfs_config cfg;
   lfs_filebd_t bd;
+  struct lfs_filebd_config bdcfg = {.read_size = 1, .prog_size = 512, .erase_size = 512, .erase_count = 256};
+  bd.cfg = &bdcfg;
   memset(&cfg, 0, sizeof(cfg));
   cfg.context = &bd;
   cfg.read = &lfs_filebd_read;
   cfg.prog = &lfs_filebd_prog;
   cfg.erase = &lfs_filebd_erase;
   cfg.sync = &lfs_filebd_sync;
-  cfg.read_size = 16;
-  cfg.prog_size = 16;
+  cfg.read_size = 1;
+  cfg.prog_size = 512;
   cfg.block_size = 512;
-  cfg.block_count = 400;
+  cfg.block_count = 256;
   cfg.block_cycles = 50000;
-  cfg.cache_size = 128;
-  cfg.lookahead_size = 16;
-  lfs_filebd_create(&cfg, "lfs-root");
+  cfg.cache_size = 256;
+  cfg.lookahead_size = 32;
+  lfs_filebd_create(&cfg, "lfs-root", &bdcfg);
 
   fs_format(&cfg);
   fs_mount(&cfg);
diff --git a/test/test_oath.c b/test/test_oath.c
index ed7bd3e3..00176ea6 100644
--- a/test/test_oath.c
+++ b/test/test_oath.c
@@ -431,20 +431,22 @@ static void test_space_full(void **state) {
 int main() {
   struct lfs_config cfg;
   lfs_filebd_t bd;
+  struct lfs_filebd_config bdcfg = {.read_size = 1, .prog_size = 512, .erase_size = 512, .erase_count = 256};
+  bd.cfg = &bdcfg;
   memset(&cfg, 0, sizeof(cfg));
   cfg.context = &bd;
   cfg.read = &lfs_filebd_read;
   cfg.prog = &lfs_filebd_prog;
   cfg.erase = &lfs_filebd_erase;
   cfg.sync = &lfs_filebd_sync;
-  cfg.read_size = 16;
-  cfg.prog_size = 16;
+  cfg.read_size = 1;
+  cfg.prog_size = 512;
   cfg.block_size = 512;
-  cfg.block_count = 400;
+  cfg.block_count = 256;
   cfg.block_cycles = 50000;
-  cfg.cache_size = 128;
-  cfg.lookahead_size = 16;
-  lfs_filebd_create(&cfg, "lfs-root");
+  cfg.cache_size = 256;
+  cfg.lookahead_size = 32;
+  lfs_filebd_create(&cfg, "lfs-root", &bdcfg);
 
   fs_format(&cfg);
   fs_mount(&cfg);
diff --git a/test/test_openpgp.c b/test/test_openpgp.c
index 331bff6c..f6432aa6 100644
--- a/test/test_openpgp.c
+++ b/test/test_openpgp.c
@@ -211,20 +211,22 @@ static void test_special(void **state) {
 int main() {
   struct lfs_config cfg;
   lfs_filebd_t bd;
+  struct lfs_filebd_config bdcfg = {.read_size = 1, .prog_size = 512, .erase_size = 512, .erase_count = 256};
+  bd.cfg = &bdcfg;
   memset(&cfg, 0, sizeof(cfg));
   cfg.context = &bd;
   cfg.read = &lfs_filebd_read;
   cfg.prog = &lfs_filebd_prog;
   cfg.erase = &lfs_filebd_erase;
   cfg.sync = &lfs_filebd_sync;
-  cfg.read_size = 16;
-  cfg.prog_size = 16;
+  cfg.read_size = 1;
+  cfg.prog_size = 512;
   cfg.block_size = 512;
-  cfg.block_count = 400;
+  cfg.block_count = 256;
   cfg.block_cycles = 50000;
-  cfg.cache_size = 128;
-  cfg.lookahead_size = 16;
-  lfs_filebd_create(&cfg, "lfs-root");
+  cfg.cache_size = 256;
+  cfg.lookahead_size = 32;
+  lfs_filebd_create(&cfg, "lfs-root", &bdcfg);
 
   fs_format(&cfg);
   fs_mount(&cfg);
diff --git a/test/test_piv.c b/test/test_piv.c
index a9be694f..59ba892e 100644
--- a/test/test_piv.c
+++ b/test/test_piv.c
@@ -121,20 +121,22 @@ static void test_regression_fuzz(void **state) {
 int main() {
   struct lfs_config cfg;
   lfs_filebd_t bd;
+  struct lfs_filebd_config bdcfg = {.read_size = 1, .prog_size = 512, .erase_size = 512, .erase_count = 256};
+  bd.cfg = &bdcfg;
   memset(&cfg, 0, sizeof(cfg));
   cfg.context = &bd;
   cfg.read = &lfs_filebd_read;
   cfg.prog = &lfs_filebd_prog;
   cfg.erase = &lfs_filebd_erase;
   cfg.sync = &lfs_filebd_sync;
-  cfg.read_size = 16;
-  cfg.prog_size = 16;
+  cfg.read_size = 1;
+  cfg.prog_size = 512;
   cfg.block_size = 512;
-  cfg.block_count = 400;
+  cfg.block_count = 256;
   cfg.block_cycles = 50000;
-  cfg.cache_size = 128;
-  cfg.lookahead_size = 16;
-  lfs_filebd_create(&cfg, "lfs-root");
+  cfg.cache_size = 256;
+  cfg.lookahead_size = 32;
+  lfs_filebd_create(&cfg, "lfs-root", &bdcfg);
 
   fs_format(&cfg);
   fs_mount(&cfg);