diff -urNp a/converter/other/pstopnm.c b/converter/other/pstopnm.c
--- a/converter/other/pstopnm.c	2018-07-23 15:14:51.200658026 +0200
+++ b/converter/other/pstopnm.c	2018-07-23 15:18:12.579910612 +0200
@@ -896,11 +896,11 @@ execGhostscript(int               const
                    ghostscriptProg, arg0,
                    deviceopt, outfileopt, gopt, ropt, textalphabitsopt,
                    "-q", "-dNOPAUSE",
-                   "-dSAFER", "-");
+                   "-dPARANOIDSAFER", "-");
     }
 
     execl(ghostscriptProg, arg0, deviceopt, outfileopt, gopt, ropt, "-q",
-          "-dNOPAUSE", "-dSAFER", "-", NULL);
+          "-dNOPAUSE", "-dPARANOIDSAFER", "-", NULL);
 
     pm_error("execl() of Ghostscript ('%s') failed, errno=%d (%s)",
              ghostscriptProg, errno, strerror(errno));
