updated for version 7.0193
diff --git a/runtime/syntax/gnuplot.vim b/runtime/syntax/gnuplot.vim
index a6fa716..5a381c7 100644
--- a/runtime/syntax/gnuplot.vim
+++ b/runtime/syntax/gnuplot.vim
@@ -138,7 +138,7 @@
syn keyword gnuplotType line[s] linesp[oints] points poiinttype sbezier splines steps
" w lt lw ls = optional
syn keyword gnuplotType vectors xerr[orbars] xyerr[orbars] yerr[orbars] financebars candlesticks vector
-syn keyword gnuplotType errorb[ars surface
+syn keyword gnuplotType errorb[ars] surface
syn keyword gnuplotType filledcurve[s] pm3d x1 x2 y1 y2 xy closed
syn keyword gnuplotType at pi front
syn keyword gnuplotType errorlines xerrorlines yerrorlines xyerrorlines