diff --git a/modules/cockroachdb/cockroachdb.go b/modules/cockroachdb/cockroachdb.go
index e3948fe95d..98f2e00196 100644
--- a/modules/cockroachdb/cockroachdb.go
+++ b/modules/cockroachdb/cockroachdb.go
@@ -288,11 +288,6 @@ func Run(ctx context.Context, img string, opts ...testcontainers.ContainerCustom
 	}
 
 	for _, opt := range opts {
-		if fn, ok := opt.(customizer); ok {
-			if err := fn.customize(ctr); err != nil {
-				return nil, fmt.Errorf("customize container: %w", err)
-			}
-		}
 		if err := opt.Customize(&req); err != nil {
 			return nil, fmt.Errorf("customize request: %w", err)
 		}
diff --git a/modules/cockroachdb/options.go b/modules/cockroachdb/options.go
index 09bc4b52b3..738036d188 100644
--- a/modules/cockroachdb/options.go
+++ b/modules/cockroachdb/options.go
@@ -11,11 +11,6 @@ import (
 // errInsecureWithPassword is returned when trying to use insecure mode with a password.
 var errInsecureWithPassword = errors.New("insecure mode cannot be used with a password")
 
-// customizer is an interface for customizing a CockroachDB container.
-type customizer interface {
-	customize(*CockroachDBContainer) error
-}
-
 // WithDatabase sets the name of the database to create and use.
 // This will be converted to lowercase as CockroachDB forces the database to be lowercase.
 // The database creation will be skipped if data exists in the `/cockroach/cockroach-data` directory within the container.