diff --git a/Makefile.in b/Makefile.in
index 83f923ad..2a217cd8 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -13,6 +13,7 @@ prefix		= @prefix@
 exec_prefix	= @exec_prefix@
 bindir		= @bindir@
 mandir		= @mandir@
+datarootdir	= @datarootdir@
 
 CC		= @CC@
 CFLAGS		= @CFLAGS@
diff --git a/doc/Makefile.in b/doc/Makefile.in
index 9af3bbec..e3834014 100644
--- a/doc/Makefile.in
+++ b/doc/Makefile.in
@@ -10,6 +10,7 @@ bindir		= @bindir@
 mandir		= @mandir@
 docdir		= $(prefix)/doc/nasm
 infodir		= @infodir@
+datarootdir	= @datarootdir@
 
 INSTALL		= @INSTALL@
 INSTALL_PROGRAM	= @INSTALL_PROGRAM@
diff --git a/rdoff/Makefile.in b/rdoff/Makefile.in
index 20454681..3ea44be7 100644
--- a/rdoff/Makefile.in
+++ b/rdoff/Makefile.in
@@ -14,6 +14,7 @@ prefix		= @prefix@
 exec_prefix	= @exec_prefix@
 bindir		= @bindir@
 mandir		= @mandir@
+datarootdir	= @datarootdir@
 
 CC		= @CC@
 CFLAGS		= @CFLAGS@