diff --git a/eeschema/sim/sim_plot_panel.cpp b/eeschema/sim/sim_plot_panel.cpp
index 24c101d535..bbc3940dea 100644
--- a/eeschema/sim/sim_plot_panel.cpp
+++ b/eeschema/sim/sim_plot_panel.cpp
@@ -401,10 +401,12 @@ void SIM_PLOT_PANEL::prepareDCAxes()
     wxString sim_cmd = getSimCommand().Lower();
     wxString rem;
 
-    if( sim_cmd.StartsWith( ".dc ", &rem ) )
+    if( sim_cmd.StartsWith( ".dc", &rem ) )
     {
         wxChar ch;
 
+        rem.Trim( false );
+
         try
         {
             ch = rem.GetChar( 0 );