diff --git a/libs/hardware/SDCardManager/include/SDCardManager.h b/libs/hardware/SDCardManager/include/SDCardManager.h
index d12b74f..604aa44 100644
--- a/libs/hardware/SDCardManager/include/SDCardManager.h
+++ b/libs/hardware/SDCardManager/include/SDCardManager.h
@@ -2,6 +2,7 @@
 
 #include <WString.h>
 #include <vector>
+#include <string>
 #include <SdFat.h>
 
 class SDCardManager {