diff --git a/stm-firmware/boot/startup-tests.c b/stm-firmware/boot/startup-tests.c
index 6eacdd8..561ce84 100644
--- a/stm-firmware/boot/startup-tests.c
+++ b/stm-firmware/boot/startup-tests.c
@@ -27,7 +27,7 @@ uint32_t startup_test_perform_ccm_ram_check(void)
 		word_ptr[idx] = idx & 1 ? 0xAA55AA55UL : 0x55AA55AAUL;
 	}
 	for (idx = 0, word_ptr = (volatile uint32_t *)ccmram_base; idx < ccmram_size / 4U; idx++) {
-		target_val = idx & 1 ? 0x55AA55AAUL : 0xAA55AA55UL;
+		target_val = idx & 1 ? 0xAA55AA55UL : 0x55AA55AAUL;
 		if (target_val != word_ptr[idx]) {
 			ret = (uint32_t)&word_ptr[idx];
 			goto exit_ret_address;