diff --git a/pub/plot/ps_plotter.cpp b/pub/plot/ps_plotter.cpp
index af86458a3489c5757aeea36317b190a8cb77b2ab..82ea4bcee4296568326aa117a329878569fbfcef 100644
--- a/pub/plot/ps_plotter.cpp
+++ b/pub/plot/ps_plotter.cpp
@@ -188,7 +188,7 @@ namespace {
 
     string ps_coord(const CAxis* A, const char a)
     {
-        return str(format("%1i %13.7g %13.7g %cSetCoord\n") % A->logflag % A->inf % A->sup % a);
+        return str(format("%1i %12.4g %12.4g %cSetCoord\n") % A->logflag % A->inf % A->sup % a);
     }
 
     string ps_axis(const CAxis* A, const string& label, const char a)