diff --git a/radio/src/simpgmspace.cpp b/radio/src/simpgmspace.cpp
index 68917c791..bf189e47d 100644
--- a/radio/src/simpgmspace.cpp
+++ b/radio/src/simpgmspace.cpp
@@ -674,6 +674,6 @@ FlagStatus RCC_GetFlagStatus(uint8_t RCC_FLAG) { return RESET; }
 ErrorStatus RTC_WaitForSynchro(void) { return SUCCESS; }
 void unlockFlash() { }
 void writeFlash(uint32_t *address, uint32_t *buffer) { SIMU_SLEEP(100); }
-uint32_t isBootloaderStart(const uint32_t *block) { return 1; }
+uint32_t isBootloaderStart(const void *block) { return 1; }
 #endif