diff --git a/Makefile.in b/Makefile.in
index a67f912..fd2b887 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -28,6 +28,7 @@
 
 SONAME=@SONAME@
 LIBNAME=lib@LIB3270_NAME@
+PRODUCT_NAME=@PRODUCT_NAME@
 INSTALL_PACKAGES=@INSTALL_PACKAGES@
 
 SOURCES= \
@@ -81,8 +82,8 @@ datarootdir=@datarootdir@
 localedir=@localedir@
 docdir=@docdir@
 sysconfdir=@sysconfdir@
-datadir=$(datarootdir)/@PRODUCT_NAME@
-confdir=$(sysconfdir)/@PRODUCT_NAME@
+datadir=$(datarootdir)/$(PRODUCT_NAME)
+confdir=$(sysconfdir)/$(PRODUCT_NAME)
 
 BASEDIR=@BASEDIR@
 
--
libgit2 0.21.2