diff --git a/Makefile.in b/Makefile.in
index bda111599..ca8293399 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -250,6 +250,7 @@ GLANGUAGE = @GLANGUAGE@
 GRAMCHECKVERSION = @GRAMCHECKVERSION@
 GTCORE = @GTCORE@
 GTCORESH = @GTCORESH@
+GTGRAMTOOL = @GTGRAMTOOL@
 GTLANG = @GTLANG@
 GTLANG2 = @GTLANG2@
 GTLANGUAGE = @GTLANGUAGE@