diff --git a/c/qrcodegen-demo.c b/c/qrcodegen-demo.c
index ae78ea7..ef44108 100644
--- a/c/qrcodegen-demo.c
+++ b/c/qrcodegen-demo.c
@@ -55,7 +55,7 @@ int main(void) {
 
 // Creates a single QR Code, then prints it to the console.
 static void doBasicDemo(void) {
-	const char *text = "Hello, world!";  // User-supplied text
+	const char *text = "Hello, world!";                // User-supplied text
 	enum qrcodegen_Ecc errCorLvl = qrcodegen_Ecc_LOW;  // Error correction level
 	
 	// Make and print the QR Code symbol
diff --git a/cpp/QrCodeGeneratorDemo.cpp b/cpp/QrCodeGeneratorDemo.cpp
index d199e23..168e273 100644
--- a/cpp/QrCodeGeneratorDemo.cpp
+++ b/cpp/QrCodeGeneratorDemo.cpp
@@ -61,7 +61,7 @@ int main() {
 
 // Creates a single QR Code, then prints it to the console.
 static void doBasicDemo() {
-	const char *text = "Hello, world!";  // User-supplied text
+	const char *text = "Hello, world!";              // User-supplied text
 	const QrCode::Ecc errCorLvl = QrCode::Ecc::LOW;  // Error correction level
 	
 	// Make and print the QR Code symbol
diff --git a/java/io/nayuki/qrcodegen/QrCodeGeneratorDemo.java b/java/io/nayuki/qrcodegen/QrCodeGeneratorDemo.java
index dbcf233..2b4baa4 100644
--- a/java/io/nayuki/qrcodegen/QrCodeGeneratorDemo.java
+++ b/java/io/nayuki/qrcodegen/QrCodeGeneratorDemo.java
@@ -57,11 +57,11 @@ public final class QrCodeGeneratorDemo {
 		
 		QrCode qr = QrCode.encodeText(text, errCorLvl);  // Make the QR Code symbol
 		
-		BufferedImage img = qr.toImage(10, 4);          // Convert to bitmap image
-		File imgFile = new File("hello-world-QR.png");  // File path for output
-		ImageIO.write(img, "png", imgFile);             // Write image to file
+		BufferedImage img = qr.toImage(10, 4);           // Convert to bitmap image
+		File imgFile = new File("hello-world-QR.png");   // File path for output
+		ImageIO.write(img, "png", imgFile);              // Write image to file
 		
-		String svg = qr.toSvgString(4);  // Convert to SVG XML code
+		String svg = qr.toSvgString(4);                  // Convert to SVG XML code
 		Files.write(new File("hello-world-QR.svg").toPath(),
 			svg.getBytes(StandardCharsets.UTF_8));
 	}
diff --git a/python/qrcodegen-demo.py b/python/qrcodegen-demo.py
index 7a1bfaa..13dd93e 100644
--- a/python/qrcodegen-demo.py
+++ b/python/qrcodegen-demo.py
@@ -41,7 +41,7 @@ def main():
 
 def do_basic_demo():
 	"""Creates a single QR Code, then prints it to the console."""
-	text = u"Hello, world!"               # User-supplied Unicode text
+	text = u"Hello, world!"     # User-supplied Unicode text
 	errcorlvl = QrCode.Ecc.LOW  # Error correction level
 	
 	# Make and print the QR Code symbol
diff --git a/rust/examples/qrcodegen-demo.rs b/rust/examples/qrcodegen-demo.rs
index c28ad72..80b2b7a 100644
--- a/rust/examples/qrcodegen-demo.rs
+++ b/rust/examples/qrcodegen-demo.rs
@@ -47,7 +47,7 @@ fn main() {
 
 // Creates a single QR Code, then prints it to the console.
 fn do_basic_demo() {
-	let text: &'static str = "Hello, world!";  // User-supplied Unicode text
+	let text: &'static str = "Hello, world!";   // User-supplied Unicode text
 	let errcorlvl: QrCodeEcc = QrCodeEcc::Low;  // Error correction level
 	
 	// Make and print the QR Code symbol