diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index 5f0b0501e3..44534e1624 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -326,7 +326,7 @@ $(obj)/%.S: $(src)/%.ttf
 quiet_cmd_acpi_c_asl= ASL     $<
 cmd_acpi_c_asl=         \
 	$(CPP) -x assembler-with-cpp -P $(UBOOTINCLUDE) -o $<.tmp $<; \
-	iasl -p $< -tc -va $<.tmp; \
+	iasl -p $< -tc $<.tmp; \
 	mv $(patsubst %.asl,%.hex,$<) $@
 
 $(obj)/dsdt.c:    $(src)/dsdt.asl