diff --git a/src/main/target/SITL/target.h b/src/main/target/SITL/target.h
index ee5bb2d3f..d100a7175 100644
--- a/src/main/target/SITL/target.h
+++ b/src/main/target/SITL/target.h
@@ -144,12 +144,6 @@
 
 extern uint32_t SystemCoreClock;
 
-#ifdef EEPROM_IN_FILE
-extern uint8_t eepromData[EEPROM_SIZE];
-#define __config_start (*eepromData)
-#define __config_end (*ARRAYEND(eepromData))
-#endif
-
 typedef enum
 {
     Mode_TEST = 0x0,
diff --git a/src/main/target/common_post.h b/src/main/target/common_post.h
index 8dff7f5dc..34e759ed2 100644
--- a/src/main/target/common_post.h
+++ b/src/main/target/common_post.h
@@ -338,7 +338,17 @@
 #undef USE_ESCSERIAL
 #endif
 
-#if !defined(EEPROM_IN_RAM) && !defined(EEPROM_IN_FILE)
+#if defined(EEPROM_IN_RAM) || defined(EEPROM_IN_FILE)
+#ifndef EEPROM_SIZE
+#define EEPROM_SIZE     4096
+#endif
+extern uint8_t eepromData[EEPROM_SIZE];
+#define __config_start (*eepromData)
+#define __config_end (*ARRAYEND(eepromData))
+#else
+#ifndef EEPROM_IN_FLASH
+#define EEPROM_IN_FLASH
+#endif
 extern uint8_t __config_start;   // configured via linker script when building binaries.
 extern uint8_t __config_end;
 #endif