diff --git a/bin/cli.js b/bin/cli.js
index edba4ec..e766b55 100755
--- a/bin/cli.js
+++ b/bin/cli.js
@@ -72,10 +72,16 @@ const args = require('meow')(`
 
 const envify = k => k.replace(/([A-Z])/g, '_$1').toUpperCase();
 
+var defaultTrueWithoutNoPrefixVars = [ "SLOW_DEVICE_MODE" ];
+
 Object.keys(args).filter(k => k.length > 1).forEach(k => {
 	if (args[k] === false) {
-		process.env[`BTCEXP_NO_${envify(k)}`] = true;
-		
+		if (defaultTrueWithoutNoPrefixVars.includes(envify(k))) {
+			process.env[`BTCEXP_${envify(k)}`] = false;
+
+		} else {
+			process.env[`BTCEXP_NO_${envify(k)}`] = true;
+		}
 	} else {
 		process.env[`BTCEXP_${envify(k)}`] = args[k];
 	}