diff --git a/core/installer/app.go b/core/installer/app.go
index 9719134..c9c7ced 100644
--- a/core/installer/app.go
+++ b/core/installer/app.go
@@ -723,7 +723,13 @@
 		if vv, ok := v[k]; ok && vv != nil {
 			if mv, ok := val.(map[string]any); ok {
 				// TODO(gio): check that it is actually map
-				ret[k] = merge(mv, vv.(map[string]any))
+				mm, ok := vv.(map[string]any)
+				if !ok {
+					// TODO(gio): handle #Network and others
+					ret[k] = vv
+				} else {
+					ret[k] = merge(mv, mm)
+				}
 			} else {
 				ret[k] = vv
 			}