diff --git a/nix/custom-config.nix b/nix/custom-config.nix
index 234547a54df..83d89dfa949 100644
--- a/nix/custom-config.nix
+++ b/nix/custom-config.nix
@@ -8,7 +8,7 @@ self: {
     basePort    = 30000;
     enableEKG        = true;
     workbenchDevMode = true;
-    extraSupervisorConfig = {};
+    extraBackendConfig = {};
   };
   membench = {
     snapshotSlot = 37173650;
diff --git a/nix/workbench/supervisor-conf.nix b/nix/workbench/supervisor-conf.nix
index aeadaba43e1..15e7fd0af01 100644
--- a/nix/workbench/supervisor-conf.nix
+++ b/nix/workbench/supervisor-conf.nix
@@ -5,7 +5,7 @@
 , node-services
 , generator-service
   ## Last-moment overrides:
-, extraSupervisorConfig
+, extraBackendConfig
 }:
 
 with lib;
@@ -57,7 +57,7 @@ let
       };
     }
     //
-    extraSupervisorConfig;
+    extraBackendConfig;
 
   ##
   ## nodeSvcSupervisorProgram :: NodeService -> SupervisorConfSection
diff --git a/nix/workbench/supervisor.nix b/nix/workbench/supervisor.nix
index 13babf70329..cca5f02edd0 100644
--- a/nix/workbench/supervisor.nix
+++ b/nix/workbench/supervisor.nix
@@ -8,7 +8,7 @@ in
 , workbench
 ##
 , cacheDir              ? cacheDirDefault
-, extraSupervisorConfig ? {}
+, extraBackendConfig    ? {}
 , useCabalRun           ? false
 , enableEKG             ? true
 ##
@@ -39,7 +39,7 @@ let
           inherit
             pkgs lib stateDir
             basePort
-            extraSupervisorConfig;
+            extraBackendConfig;
         };
     };