diff --git a/ArduCopter/defines.h b/ArduCopter/defines.h
index 5a476279be..502e868233 100644
--- a/ArduCopter/defines.h
+++ b/ArduCopter/defines.h
@@ -345,8 +345,8 @@ enum gcs_severity {
 
 // EEPROM addresses
 #define EEPROM_MAX_ADDR		4096
-// parameters get the first 1280 bytes of EEPROM, remainder is for waypoints
-#define WP_START_BYTE 0x500 // where in memory home WP is stored + all other WP
+// parameters get the first 1024 bytes of EEPROM, remainder is for waypoints
+#define WP_START_BYTE 0x400 // where in memory home WP is stored + all other WP
 #define WP_SIZE 15
 
 #define ONBOARD_PARAM_NAME_LENGTH 15
diff --git a/ArduPlane/defines.h b/ArduPlane/defines.h
index 1ed15dd9b7..4b54294e53 100644
--- a/ArduPlane/defines.h
+++ b/ArduPlane/defines.h
@@ -200,8 +200,8 @@ enum gcs_severity {
 
 // EEPROM addresses
 #define EEPROM_MAX_ADDR		4096
-// parameters get the first 1280 of EEPROM, remainder is for waypoints
-#define WP_START_BYTE 0x500 // where in memory home WP is stored + all other WP
+// parameters get the first 1024 bytes of EEPROM, remainder is for waypoints
+#define WP_START_BYTE 0x400 // where in memory home WP is stored + all other WP
 #define WP_SIZE 15
 
 // fence points are stored at the end of the EEPROM