diff --git a/tests/drivers/i2c/i2c_target_api/boards/frdm_mcxn947_mcxn947_cpu0.overlay b/tests/drivers/i2c/i2c_target_api/boards/frdm_mcxn947_mcxn947_cpu0.overlay
index d0dc5661db8..71a99565aab 100644
--- a/tests/drivers/i2c/i2c_target_api/boards/frdm_mcxn947_mcxn947_cpu0.overlay
+++ b/tests/drivers/i2c/i2c_target_api/boards/frdm_mcxn947_mcxn947_cpu0.overlay
@@ -38,7 +38,7 @@
 	eeprom0: eeprom@54 {
 		compatible = "zephyr,i2c-target-eeprom";
 		reg = <0x54>;
-		size = <1024>;
+		size = <256>;
 	};
 };
 
@@ -46,6 +46,6 @@
 	eeprom1: eeprom@56 {
 		compatible = "zephyr,i2c-target-eeprom";
 		reg = <0x56>;
-		size = <1024>;
+		size = <256>;
 	};
 };