diff --git a/acinclude.m4 b/acinclude.m4
index 9962edfcd..e37391661 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -580,7 +580,7 @@ for be in ${BACKENDS}; do
 
     mustek_pp)
     if test "${sane_cv_use_libieee1284}" != "yes" && test "${enable_parport_directio}" != "yes"; then
-      echo "*** $be backend requires libieee1284 and paraport-directio libraries - DISABLE_MSG"
+      echo "*** $be backend requires libieee1284 and paraport-directio libraries - $DISABLE_MSG"
       backend_supported="no"
     fi
     ;;
diff --git a/configure b/configure
index b2efe945c..a0f7cdd7f 100755
--- a/configure
+++ b/configure
@@ -34418,7 +34418,7 @@ for be in ${BACKENDS}; do
 
     mustek_pp)
     if test "${sane_cv_use_libieee1284}" != "yes" && test "${enable_parport_directio}" != "yes"; then
-      echo "*** $be backend requires libieee1284 and paraport-directio libraries - DISABLE_MSG"
+      echo "*** $be backend requires libieee1284 and paraport-directio libraries - $DISABLE_MSG"
       backend_supported="no"
     fi
     ;;