diff --git a/src/helper/childRegistrationUtils.js b/src/helper/childRegistrationUtils.js
index 191f5f6..f6a3827 100644
--- a/src/helper/childRegistrationUtils.js
+++ b/src/helper/childRegistrationUtils.js
@@ -1,3 +1,17 @@
+// Map a child's raw softwareType (the lowercased node name from
+// buildConfig) to the "role" key that parent registerChild() handlers
+// dispatch on. Without this, MGC/pumpingStation register-handlers (which
+// branch on 'machine' / 'machinegroup' / 'pumpingstation' / 'measurement')
+// silently miss every real production child because rotatingMachine
+// reports softwareType='rotatingmachine' and machineGroupControl reports
+// 'machinegroupcontrol'. Existing tests that pass already-aliased keys
+// ('machine', 'machinegroup') stay green because those aren't in the
+// alias map and pass through unchanged.
+const SOFTWARE_TYPE_ALIASES = {
+  rotatingmachine: 'machine',
+  machinegroupcontrol: 'machinegroup',
+};
+
 class ChildRegistrationUtils {
   constructor(mainClass) {
     this.mainClass = mainClass;
@@ -15,7 +29,8 @@ class ChildRegistrationUtils {
       return false;
     }
 
-    const softwareType = (child.config.functionality.softwareType || '').toLowerCase();
+    const rawSoftwareType = (child.config.functionality.softwareType || '').toLowerCase();
+    const softwareType = SOFTWARE_TYPE_ALIASES[rawSoftwareType] || rawSoftwareType;
     const name = child.config.general.name || child.config.general.id || 'unknown';
     const id = child.config.general.id || name;