diff --git a/src/arch/i386/firmware/pcbios/e820mangler.S b/src/arch/i386/firmware/pcbios/e820mangler.S
index 32be9ee5..99ca519b 100644
--- a/src/arch/i386/firmware/pcbios/e820mangler.S
+++ b/src/arch/i386/firmware/pcbios/e820mangler.S
@@ -237,6 +237,7 @@ get_underlying_e820:
 	popw	%di
 	incw	%bx
 	movl	%edx, %eax
+	clc
 	ret
 2:	
 	/* If the requested region is earlier than the cached region,