diff --git a/config.go b/config.go
index 04ef4aa..ea575c0 100644
--- a/config.go
+++ b/config.go
@@ -7,16 +7,32 @@ import (
 
 // Parse the CLI flags
 func parseFlags() Config {
-	var config Config
+	var switchConf Config
+	defaultSwitches := Config{
+		useLowerCase:  true,
+		useUpperCase:  true,
+		useNumber:     true,
+		useSpecial:    false,
+		useComplex:    false,
+		humanReadable: false,
+	}
+	config := Config{
+		useLowerCase:  defaultSwitches.useLowerCase,
+		useUpperCase:  defaultSwitches.useUpperCase,
+		useNumber:     defaultSwitches.useNumber,
+		useSpecial:    defaultSwitches.useSpecial,
+		useComplex:    defaultSwitches.useComplex,
+		humanReadable: defaultSwitches.humanReadable,
+	}
 
 	// Read and set all flags
-	flag.BoolVar(&config.useLowerCase, "L", true, "Use lower case characters in passwords")
-	flag.BoolVar(&config.useUpperCase, "U", true, "Use upper case characters in passwords")
-	flag.BoolVar(&config.useNumber, "N", true, "Use numbers in passwords")
-	flag.BoolVar(&config.useSpecial, "S", false, "Use special characters in passwords")
-	flag.BoolVar(&config.useComplex, "C", false, "Generate complex passwords (implies -L -U -N -S, disables -H)")
+	flag.BoolVar(&switchConf.useLowerCase, "L", false, "Use lower case characters in passwords")
+	flag.BoolVar(&switchConf.useUpperCase, "U", false, "Use upper case characters in passwords")
+	flag.BoolVar(&switchConf.useNumber, "N", false, "Use numerich characters in passwords")
+	flag.BoolVar(&switchConf.useSpecial, "S", false, "Use special characters in passwords")
+	flag.BoolVar(&switchConf.useComplex, "C", false, "Generate complex passwords (implies -L -U -N -S, disables -H)")
+	flag.BoolVar(&switchConf.humanReadable, "H", false, "Generate human-readable passwords")
 	flag.BoolVar(&config.spellPassword, "l", false, "Spell generated password")
-	flag.BoolVar(&config.humanReadable, "H", false, "Generate human-readable passwords")
 	flag.BoolVar(&config.showVersion, "v", false, "Show version")
 	flag.IntVar(&config.minPassLen, "m", DefaultMinLenght, "Minimum password length")
 	flag.IntVar(&config.maxPassLen, "x", DefaultMaxLenght, "Maxiumum password length")
@@ -26,7 +42,27 @@ func parseFlags() Config {
 		"New style password parameters (higher priority than single parameters)")
 	flag.Parse()
 
-	// Parse additional parameters
+	// Invert-switch the defaults
+	if switchConf.useLowerCase {
+		config.useLowerCase = !defaultSwitches.useLowerCase
+	}
+	if switchConf.useUpperCase {
+		config.useUpperCase = !defaultSwitches.useUpperCase
+	}
+	if switchConf.useNumber {
+		config.useNumber = !defaultSwitches.useNumber
+	}
+	if switchConf.useSpecial {
+		config.useSpecial = !defaultSwitches.useSpecial
+	}
+	if switchConf.useComplex {
+		config.useComplex = !defaultSwitches.useComplex
+	}
+	if switchConf.humanReadable {
+		config.humanReadable = !defaultSwitches.humanReadable
+	}
+
+	// Parse additional parameters and new-style switches
 	parseParams(&config)
 
 	return config