diff --git a/arch/x86/lib/zimage.c b/arch/x86/lib/zimage.c
index 65bccda..8f1c18e 100644
--- a/arch/x86/lib/zimage.c
+++ b/arch/x86/lib/zimage.c
@@ -423,7 +423,7 @@
 
 	entry = bmi->load_address;
 	image_64bit = false;
-	if (IS_ENABLED(CONFIG_X86_RUN_64BIT) &&
+	if (IS_ENABLED(CONFIG_X86_64) &&
 	    (hdr->xloadflags & XLF_KERNEL_64)) {
 		image_64bit = true;
 	}