1 files changed, 1 insertions, 1 deletions

diff --git a/lisp/org/ob-gnuplot.el b/lisp/org/ob-gnuplot.el
index 57396f1d015..8767e88e4c3 100644
--- a/lisp/org/ob-gnuplot.el
+++ b/lisp/org/ob-gnuplot.el
@@ -253,7 +253,7 @@ then create one.  Return the initialized session.  The current
         (org-babel-gnuplot-quote-timestamp-field s)
       (if (zerop (length s))
           (or *org-babel-gnuplot-missing* s)
-        (if (string-match "[ \"]" "?")
+        (if (string-match "[ \"]" s)
             (concat "\"" (mapconcat 'identity (split-string s "\"") "\"\"")
                     "\"")
           s)))))