1 files changed, 7 insertions, 0 deletions
diff --git a/src/Fl_arg.cxx b/src/Fl_arg.cxx
index c6b2e60a7..49002816d 100644
--- a/src/Fl_arg.cxx
+++ b/src/Fl_arg.cxx
@@ -82,6 +82,13 @@ int Fl::arg(int argc, char **argv, int &i) {
   if (s[0] != '-' || s[1] == '-' || !s[1]) {return_i = 1; return 0;}
   s++; // point after the dash
 
+#ifdef __APPLE__
+  if (!strncmp(s, "psn", 3)) {
+    // Skip process serial number...
+    i++;
+  }
+  else
+#endif // __APPLE__
   if (fl_match(s, "iconic")) {
     fl_show_iconic = 1;
     i++;