diff --git a/lib/core/engine.js b/lib/core/engine.js
index 56dd62df6..1c64466e1 100644
--- a/lib/core/engine.js
+++ b/lib/core/engine.js
@@ -169,7 +169,6 @@ class Engine {
     this.registerModule('profiler');
     this.registerModule('deploytracker');
     this.registerModule('specialconfigs');
-    this.registerModule('specialconfigs');
     this.registerModule('console_listener', {ipc: self.ipc});
     this.registerModule('contracts_manager');
     this.registerModule('deployment', {plugins: this.plugins, onlyCompile: options.onlyCompile});