diff --git a/Common/DefaultOptions.h b/Common/DefaultOptions.h
index 4cf7462589b5420694eda0e6a54ed0885db4c6fa..c0db1eda146b5b680f9944af5480cab9fba2a488 100644
--- a/Common/DefaultOptions.h
+++ b/Common/DefaultOptions.h
@@ -73,7 +73,7 @@ StringXString GeneralOptions_String[] = {
     "explorer.exe %s" , 
 #elif defined(__APPLE__)
     "open %s" ,
-#elif defined(__FreeBSD__)
+#elif defined (__FreeBSD__) || defined (__NetBSD__) || defined (__OpenBSD__)
     "if [[ $(ps -ax|grep mozilla|grep -v grep) ]]; "
     "then mozilla -remote 'openurl(%s)' ; else mozilla %s ; fi &" ,
 #else