diff --git a/configure.ac b/configure.ac
index 57df640..00652e5 100644
--- a/configure.ac
+++ b/configure.ac
@@ -185,9 +185,13 @@ case "$host_os" in
 esac
 bootdirname=`echo "$bootdirname" | sed "$program_transform_name"`
 AC_SUBST(bootdirname)
+AC_DEFINE_UNQUOTED(GRUB_BOOT_DIR_NAME, "$bootdirname",
+    [Default boot directory name]")
 
 grubdirname=`echo "$PACKAGE" | sed "$program_transform_name"`
 AC_SUBST(grubdirname)
+AC_DEFINE_UNQUOTED(GRUB_DIR_NAME, "$grubdirname",
+    [Default grub directory name])
 
 #
 # Checks for build programs.
diff --git a/include/grub/emu/misc.h b/include/grub/emu/misc.h
index 972bc4e..5dddc1e 100644
--- a/include/grub/emu/misc.h
+++ b/include/grub/emu/misc.h
@@ -19,6 +19,7 @@
 #ifndef GRUB_EMU_MISC_H
 #define GRUB_EMU_MISC_H 1
 
+#include <config.h>
 #include <grub/symbol.h>
 #include <grub/types.h>
 #include <grub/util/libzfs.h>
@@ -32,9 +33,9 @@
 
 #ifdef __NetBSD__
 /* NetBSD uses /boot for its boot block.  */
-# define DEFAULT_DIRECTORY	"/grub"
+# define DEFAULT_DIRECTORY	"/"GRUB_DIR_NAME
 #else
-# define DEFAULT_DIRECTORY	"/boot/grub"
+# define DEFAULT_DIRECTORY	"/"GRUB_BOOT_DIR_NAME"/"GRUB_DIR_NAME
 #endif
 
 #define DEFAULT_DEVICE_MAP	DEFAULT_DIRECTORY "/device.map"