diff --git a/Makefile.in b/Makefile.in
index ef39ca8ef33428b37863e38de4ed23cfe9e80828..5d655868e1a6e4effbe7fc57ef3e3b3d92ab808e 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -66,6 +66,7 @@ VPATH=@srcdir@
 srcdir=@srcdir@
 
 prefix=@prefix@
+exec_prefix=@exec_prefix@
 datarootdir = @datarootdir@
 bindir=@bindir@
 sbindir=@sbindir@