diff --git a/embddr/gnuplot.scm b/embddr/gnuplot.scm
index 77f424f..bbed30b 100644
--- a/embddr/gnuplot.scm
+++ b/embddr/gnuplot.scm
@@ -41,7 +41,7 @@
           (case key
             ((x) x)
             ((y) y)
-            ((title) title)
+            ((title) (or title ""))
             ((with) with)
             (else #f))))))