diff --git a/Make.inc.in b/Make.inc.in
index f03d5958..a89030d5 100644
--- a/Make.inc.in
+++ b/Make.inc.in
@@ -15,6 +15,7 @@ INSTALL_DIR=@INSTALL_DIR@
 INSTALL_LIBDIR=@INSTALL_LIBDIR@
 INSTALL_INCLUDEDIR=@INSTALL_INCLUDEDIR@
 INSTALL_DOCSDIR=@INSTALL_DOCSDIR@
+INSTALL_SAMPLESDIR=@INSTALL_SAMPLESDIR@
 
 
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