diff --git a/crates/storage/db/src/implementation/mdbx/mod.rs b/crates/storage/db/src/implementation/mdbx/mod.rs
index ea82ed4285d6..340377051fc7 100644
--- a/crates/storage/db/src/implementation/mdbx/mod.rs
+++ b/crates/storage/db/src/implementation/mdbx/mod.rs
@@ -73,7 +73,11 @@ impl<E: EnvironmentKind> Env<E> {
         };
 
         let mut inner_env = Environment::new();
-        inner_env.set_max_dbs(Tables::ALL.len());
+
+        // Note: We set max dbs to 256 here to allow for custom tables. This needs to be set on
+        // environment creation.
+        debug_assert!(Tables::ALL.len() <= 256, "number of tables exceed max dbs");
+        inner_env.set_max_dbs(256);
         inner_env.set_geometry(Geometry {
             // Maximum database size of 4 terabytes
             size: Some(0..(4 * TERABYTE)),