diff --git a/lib/libesp32/Zip-readonly-FS/src/ZipReadFS.cpp b/lib/libesp32/Zip-readonly-FS/src/ZipReadFS.cpp
index da9b42645..ffe07dc73 100644
--- a/lib/libesp32/Zip-readonly-FS/src/ZipReadFS.cpp
+++ b/lib/libesp32/Zip-readonly-FS/src/ZipReadFS.cpp
@@ -171,6 +171,9 @@ public:
   operator bool() {
     return (bool) _f;
   }
+  bool setBufferSize(size_t size) {
+    return true;
+  }
 
 protected:
   File _f;
@@ -226,6 +229,10 @@ public:
     // do nothing
   }
 
+  bool setBufferSize(size_t size) {
+    return true;
+  }
+
   bool seek(uint32_t pos, SeekMode mode) {
     // AddLog(LOG_LEVEL_DEBUG, "ZIP: seek pos=%i mode=%i", pos, mode);
     if (SeekSet == mode) {