diff --git a/lib/get_it_impl.dart b/lib/get_it_impl.dart
index 3e497d2..02a3d92 100644
--- a/lib/get_it_impl.dart
+++ b/lib/get_it_impl.dart
@@ -371,7 +371,7 @@ class _GetItImplementation implements GetIt {
     assert(
       instanceFactory != null,
       // ignore: missing_whitespace_between_adjacent_strings
-      'Object/factory with ${instanceName != null ? 'with name $instanceName and ' : ' '}'
+      'Object/factory with ${instanceName != null ? 'with name $instanceName and ' : ''}'
       'type ${T.toString()} is not registered inside GetIt. '
       '\n(Did you accidentally do GetIt sl=GetIt.instance(); instead of GetIt sl=GetIt.instance;'
       '\nDid you forget to register it?)',
@@ -806,7 +806,7 @@ class _GetItImplementation implements GetIt {
           !allowReassignment,
       ArgumentError(
         // ignore: missing_whitespace_between_adjacent_strings
-        'Object/factory with ${instanceName != null ? 'with name $instanceName and ' : ' '}'
+        'Object/factory with ${instanceName != null ? 'with name $instanceName and ' : ''}'
         'type ${T.toString()} is already registered inside GetIt. ',
       ),
     );