diff --git a/libraries/Update/src/Update.h b/libraries/Update/src/Update.h
index 0969f248666..d34efe73196 100644
--- a/libraries/Update/src/Update.h
+++ b/libraries/Update/src/Update.h
@@ -190,6 +190,8 @@ class UpdateClass {
     uint8_t _ledOn;
 };
 
+#if !defined(NO_GLOBAL_INSTANCES) && !defined(NO_GLOBAL_UPDATE)
 extern UpdateClass Update;
+#endif
 
 #endif
diff --git a/libraries/Update/src/Updater.cpp b/libraries/Update/src/Updater.cpp
index 30d88cb8ff1..c461e7377e7 100644
--- a/libraries/Update/src/Updater.cpp
+++ b/libraries/Update/src/Updater.cpp
@@ -414,4 +414,6 @@ bool UpdateClass::_chkDataInBlock(const uint8_t *data, size_t len) const {
     return false;
 }
 
+#if !defined(NO_GLOBAL_INSTANCES) && !defined(NO_GLOBAL_UPDATE)
 UpdateClass Update;
+#endif