diff --git a/src/OrcaSlicer.cpp b/src/OrcaSlicer.cpp
index a45f97698c..5d8b9aaafb 100644
--- a/src/OrcaSlicer.cpp
+++ b/src/OrcaSlicer.cpp
@@ -7404,7 +7404,7 @@ void CLI::print_help(bool include_print_options, PrinterTechnology printer_techn
         << std::endl
         << "Print setting priorities:" << std::endl
         << "\t1) setting values from the command line (highest priority)"<< std::endl
-        << "\t2) setting values loaded with --load_settings and --load_filaments" << std::endl
+        << "\t2) setting values loaded with --load-settings and --load-filaments" << std::endl
 	    << "\t3) setting values loaded from 3mf(lowest priority)" << std::endl;
 
     /*if (include_print_options) {
diff --git a/src/libslic3r/Config.cpp b/src/libslic3r/Config.cpp
index 242e4bb146..71ae950d16 100644
--- a/src/libslic3r/Config.cpp
+++ b/src/libslic3r/Config.cpp
@@ -1812,17 +1812,31 @@ bool DynamicConfig::read_cli(int argc, const char* const argv[], t_config_option
             // to the end of the value.
             if (opt_base->type() == coBools && value.empty())
                 static_cast<ConfigOptionBools*>(opt_base)->values.push_back(!no);
-            else
+            else {
                 // Deserialize any other vector value (ConfigOptionInts, Floats, Percents, Points) the same way
                 // they get deserialized from an .ini file. For ConfigOptionStrings, that means that the C-style unescape
                 // will be applied for values enclosed in quotes, while values non-enclosed in quotes are left to be
                 // unescaped by the calling shell.
-				opt_vector->deserialize(value, true);
+                bool deserialized = false;
+                try {
+                    deserialized = opt_vector->deserialize(value, true);
+                } catch (const std::exception &ex) {
+                    // e.g. "nil" deserialized into a non-nullable vector option throws instead of
+                    // returning false - treat that the same as any other invalid value here.
+                    deserialized = false;
+                }
+                if (! deserialized) {
+                    boost::nowide::cerr << "Invalid value for option --" << token.c_str() << std::endl;
+                    return false;
+                }
+            }
         } else if (opt_base->type() == coBool) {
             if (value.empty())
                 static_cast<ConfigOptionBool*>(opt_base)->value = !no;
-            else
-                opt_base->deserialize(value);
+            else if (! opt_base->deserialize(value)) {
+                boost::nowide::cerr << "Invalid value for option --" << token.c_str() << std::endl;
+                return false;
+            }
         } else if (opt_base->type() == coString) {
             // Do not unescape single string values, the unescaping is left to the calling shell.
             static_cast<ConfigOptionString*>(opt_base)->value = value;
diff --git a/src/libslic3r/PrintConfig.cpp b/src/libslic3r/PrintConfig.cpp
index 2a4eb8d7a7..289572c755 100644
--- a/src/libslic3r/PrintConfig.cpp
+++ b/src/libslic3r/PrintConfig.cpp
@@ -11948,13 +11948,11 @@ CLIActionsConfigDef::CLIActionsConfigDef()
     def = this->add("load_defaultfila", coBool);
     def->label = L("Load default filaments");
     def->tooltip = L("Load first filament as default for those not loaded.");
-    def->cli_params = "option";
     def->set_default_value(new ConfigOptionBool(false));
 
     def = this->add("min_save", coBool);
     def->label = L("Minimum save");
     def->tooltip = L("Export 3MF with minimum size.");
-    def->cli_params = "option";
     def->set_default_value(new ConfigOptionBool(false));
 
     def = this->add("mtcpp", coInt);
@@ -11980,7 +11978,6 @@ CLIActionsConfigDef::CLIActionsConfigDef()
     def = this->add("normative_check", coBool);
     def->label = L("Normative check");
     def->tooltip = L("Check the normative items.");
-    def->cli_params = "option";
     def->set_default_value(new ConfigOptionBool(true));
 
     /*def = this->add("help_fff", coBool);
@@ -12295,7 +12292,6 @@ CLIMiscConfigDef::CLIMiscConfigDef()
     def = this->add("skip_modified_gcodes", coBool);
     def->label = L("Skip modified G-code in 3MF");
     def->tooltip = L("Skip the modified G-code in 3MF from printer or filament presets.");
-    def->cli_params = "option";
     def->set_default_value(new ConfigOptionBool(false));
 
     def = this->add("makerlab_name", coString);
@@ -12325,14 +12321,12 @@ CLIMiscConfigDef::CLIMiscConfigDef()
     def = this->add("allow_newer_file", coBool);
     def->label = L("Allow 3MF with newer version to be sliced");
     def->tooltip = L("Allow 3MF with newer version to be sliced.");
-    def->cli_params = "option";
     def->set_default_value(new  ConfigOptionBool(false));
 
     def = this->add("allow_mix_temp", coBool);
     // internal use only, don't need translation
     def->label = "Allow filaments with high/low temperature to be printed together";
     def->tooltip = "Allow filaments with high/low temperature to be printed together.";
-    def->cli_params = "option";
     def->set_default_value(new  ConfigOptionBool(false));
 }