diff --git a/grub-core/Makefile.am b/grub-core/Makefile.am
index 294888909..1881c5844 100644
--- a/grub-core/Makefile.am
+++ b/grub-core/Makefile.am
@@ -52,6 +52,8 @@ grub_script.yy.c: grub_script.yy.h
 rs_decoder.S: $(srcdir)/lib/reed_solomon.c
 	$(TARGET_CC) $(TARGET_CPPFLAGS) $(TARGET_CFLAGS) -I$(top_builddir) -S -DSTANDALONE -o $@ $< -g0 -mregparm=3
 
+kern/i386/pc/startup.S: $(builddir)/rs_decoder.S
+
 CLEANFILES += grub_script.yy.c grub_script.yy.h
 
 include $(srcdir)/Makefile.core.am