diff --git a/src/plot/xfig_plot_confmap.sl b/src/plot/xfig_plot_confmap.sl
index 8b24dfe333d091ede4ff8950b1d6eb5d298d4ec2..4171cf53a7c38996bdc49e9eb282b5c1d9df4184 100644
--- a/src/plot/xfig_plot_confmap.sl
+++ b/src/plot/xfig_plot_confmap.sl
@@ -70,8 +70,10 @@ define xfig_plot_confmap() %{{{
     throw UsageError, sprintf("Usage error in '%s': Field '%s' does not exist. Check the list of available fields above.", _function_name(), field_to_be_plotted);
   }
   variable keys = fits_read_key_struct(fp, "pxnum",  "pynum", "pxname", "pyname", "best_x", "best_y", "beststat");
-  keys.pxname = strreplace(keys.pxname, "(1).", "1_");
-  keys.pyname = strreplace(keys.pyname, "(1).", "1_");
+  %keys.pxname = strreplace(keys.pxname, "(1).", "1_");
+  %keys.pyname = strreplace(keys.pyname, "(1).", "1_");
+  keys.pxname = escapedParameterName(keys.pxname);
+  keys.pyname = escapedParameterName(keys.pyname);
   variable min_chi = min(get_struct_field(cm, "chisqr"));
   if(min_chi < keys.beststat)
   {