diff --git a/grub-core/Makefile.core.def b/grub-core/Makefile.core.def
index 77dc7ed4b..b58a75f67 100644
--- a/grub-core/Makefile.core.def
+++ b/grub-core/Makefile.core.def
@@ -980,7 +980,6 @@ module = {
   name = btrfs;
   common = fs/btrfs.c;
   common = lib/crc.c;
-  common = lib/minilzo/minilzo.c;
   cflags = '$(CFLAGS_POSIX) -Wno-undef';
   cppflags = '-I$(srcdir)/lib/posix_wrap -I$(srcdir)/lib/minilzo -DMINILZO_HAVE_CONFIG_H';
 };