diff --git a/src/soc/intel/common/block/cpu/car/cache_as_ram_fsp.S b/src/soc/intel/common/block/cpu/car/cache_as_ram_fsp.S
index e77b841..04dc533 100644
--- a/src/soc/intel/common/block/cpu/car/cache_as_ram_fsp.S
+++ b/src/soc/intel/common/block/cpu/car/cache_as_ram_fsp.S
@@ -71,7 +71,7 @@
 	jnz	.halt_forever
 
 	/* Setup bootblock stack */
-	mov	%edx, %esp
+	movl	$_ecar_stack, %esp
 	/*
 	 * temp_memory_start/end reside in the .bss section, which gets cleared
 	 * below. Save the FSP return value to the stack before writing those