diff --git a/pkg/morph/client/internal/static.go b/pkg/morph/client/internal/static.go
new file mode 100644
index 00000000..0bba1b32
--- /dev/null
+++ b/pkg/morph/client/internal/static.go
@@ -0,0 +1,11 @@
+package internal
+
+import (
+	"github.com/nspcc-dev/neo-go/pkg/util"
+)
+
+// StaticClient groups client.StaticClient type interface methods which are needed to be inherited
+// by upper-level client instances.
+type StaticClient interface {
+	ContractAddress() util.Uint160
+}