diff --git a/src/sysvars.hpp b/src/sysvars.hpp
index 119371c..79d3f61 100644
--- a/src/sysvars.hpp
+++ b/src/sysvars.hpp
@@ -11,8 +11,13 @@
 #ifndef USEDFS
 # if defined(ESP32)
 #  ifdef USE_LITTLEFS
-#   include <LITTLEFS.h>
-#   define USEDFS LITTLEFS
+#   if ESP_IDF_VERSION_MAJOR < 4
+#    include <LITTLEFS.h>
+#    define USEDFS LITTLEFS
+#   else
+#    include <LittleFS.h>
+#    define USEDFS LittleFS
+#   endif
 #  else
 #   include <SPIFFS.h>
 #   define USEDFS SPIFFS