diff --git a/src/cc1310_platform.h b/src/cc1310_platform.h
index 17086ab..1014f0f 100644
--- a/src/cc1310_platform.h
+++ b/src/cc1310_platform.h
@@ -20,7 +20,7 @@ class CC1310Platform : public Platform
     void restart() final;
     void fatalError() final;
 
-    uint8_t* getEepromBuffer(uint16_t size) final;
+    uint8_t* getEepromBuffer(uint32_t size) final;
     void commitToEeprom() final;
 };
 
diff --git a/src/esp32_platform.h b/src/esp32_platform.h
index 07b0d75..0193efe 100644
--- a/src/esp32_platform.h
+++ b/src/esp32_platform.h
@@ -32,7 +32,7 @@ public:
     bool sendBytesUniCast(uint32_t addr, uint16_t port, uint8_t* buffer, uint16_t len) override;
 
     //memory
-    uint8_t* getEepromBuffer(uint16_t size);
+    uint8_t* getEepromBuffer(uint32_t size);
     void commitToEeprom();
 private:
     WiFiUDP _udp;
diff --git a/src/esp_platform.h b/src/esp_platform.h
index c535bae..ce55d13 100644
--- a/src/esp_platform.h
+++ b/src/esp_platform.h
@@ -32,7 +32,7 @@ class EspPlatform : public ArduinoPlatform
     bool sendBytesUniCast(uint32_t addr, uint16_t port, uint8_t* buffer, uint16_t len) override;
     
     //memory
-    uint8_t* getEepromBuffer(uint16_t size);
+    uint8_t* getEepromBuffer(uint32_t size);
     void commitToEeprom();
 private:
     WiFiUDP _udp;
diff --git a/src/knx/platform.cpp b/src/knx/platform.cpp
index 241dd14..2b77893 100644
--- a/src/knx/platform.cpp
+++ b/src/knx/platform.cpp
@@ -128,7 +128,7 @@ void Platform::flashErase(uint16_t eraseBlockNum)
 void Platform::flashWritePage(uint16_t pageNumber, uint8_t* data)
 {}
 
-uint8_t * Platform::getEepromBuffer(uint16_t size)
+uint8_t * Platform::getEepromBuffer(uint32_t size)
 {
     return nullptr;
 }
diff --git a/src/knx/platform.h b/src/knx/platform.h
index 304e351..b8fafff 100644
--- a/src/knx/platform.h
+++ b/src/knx/platform.h
@@ -61,7 +61,7 @@ class Platform
     //
     // --- changes to the UserMemory are written directly into the address space starting at getEepromBuffer
     // --- commitToEeprom must save this to a non-volatile area if neccessary
-    virtual uint8_t* getEepromBuffer(uint16_t size);
+    virtual uint8_t* getEepromBuffer(uint32_t size);
     virtual void commitToEeprom();
     // -------------------------------------------------------------------------------------------------------
 
diff --git a/src/linux_platform.h b/src/linux_platform.h
index 0ec9bb9..d691e63 100644
--- a/src/linux_platform.h
+++ b/src/linux_platform.h
@@ -55,7 +55,7 @@ public:
     int readWriteSpi (uint8_t *data, size_t len) override;
 
     //memory
-    uint8_t* getEepromBuffer(uint16_t size) override;
+    uint8_t* getEepromBuffer(uint32_t size) override;
     void commitToEeprom() override;
     void cmdlineArgs(int argc, char** argv);
 
diff --git a/src/rp2040_arduino_platform.h b/src/rp2040_arduino_platform.h
index 77a8736..15e6dcb 100644
--- a/src/rp2040_arduino_platform.h
+++ b/src/rp2040_arduino_platform.h
@@ -30,7 +30,7 @@ public:
     void restart();
 
     #ifdef USE_RP2040_EEPROM_EMULATION
-    uint8_t* getEepromBuffer(uint16_t size);
+    uint8_t* getEepromBuffer(uint32_t size);
     void commitToEeprom();
 
     #ifdef USE_RP2040_LARGE_EEPROM_EMULATION
diff --git a/src/samd_platform.h b/src/samd_platform.h
index fb22dc6..948a5d8 100644
--- a/src/samd_platform.h
+++ b/src/samd_platform.h
@@ -17,7 +17,7 @@ public:
 
     void restart();
 #ifdef USE_SAMD_EEPROM_EMULATION
-    uint8_t* getEepromBuffer(uint16_t size);
+    uint8_t* getEepromBuffer(uint32_t size);
     void commitToEeprom();
 #else
     // size of one EraseBlock in pages
diff --git a/src/stm32_platform.h b/src/stm32_platform.h
index 056a327..7545ca0 100644
--- a/src/stm32_platform.h
+++ b/src/stm32_platform.h
@@ -15,7 +15,7 @@ public:
     void restart();
     
     //memory
-    uint8_t* getEepromBuffer(uint16_t size);
+    uint8_t* getEepromBuffer(uint32_t size);
     void commitToEeprom();
 private:
     uint8_t *_eepromPtr = nullptr;