diff --git a/initializr-generator/src/main/java/io/spring/initializr/generator/language/CodeBlock.java b/initializr-generator/src/main/java/io/spring/initializr/generator/language/CodeBlock.java
index ac0aebe6..78035ee9 100644
--- a/initializr-generator/src/main/java/io/spring/initializr/generator/language/CodeBlock.java
+++ b/initializr-generator/src/main/java/io/spring/initializr/generator/language/CodeBlock.java
@@ -264,7 +264,7 @@ public final class CodeBlock {
 
 		private void addArgument(String format, char c, Object arg) {
 			switch (c) {
-				case 'L' -> this.args.add(arg);
+				case 'L' -> this.args.add(arg(arg));
 				case 'S' -> this.args.add(argToString(arg));
 				case 'T' -> this.args.add(argToType(arg));
 				default -> throw new IllegalArgumentException(
@@ -272,8 +272,15 @@ public final class CodeBlock {
 			}
 		}
 
-		private String argToString(Object o) {
-			return (o != null) ? String.valueOf(o) : null;
+		private Object arg(Object arg) {
+			if (arg instanceof CodeBlock code) {
+				this.imports.addAll(code.getImports());
+			}
+			return arg;
+		}
+
+		private String argToString(Object arg) {
+			return (arg != null) ? String.valueOf(arg) : null;
 		}
 
 		private String argToType(Object arg) {
diff --git a/initializr-generator/src/test/java/io/spring/initializr/generator/language/CodeBlockTests.java b/initializr-generator/src/test/java/io/spring/initializr/generator/language/CodeBlockTests.java
index ed50c54e..949ab993 100644
--- a/initializr-generator/src/test/java/io/spring/initializr/generator/language/CodeBlockTests.java
+++ b/initializr-generator/src/test/java/io/spring/initializr/generator/language/CodeBlockTests.java
@@ -179,6 +179,12 @@ class CodeBlockTests {
 		assertThat(code.getImports()).isEmpty();
 	}
 
+	@Test
+	void codeBlockWithParameterCodeBlockAddsImports() {
+		CodeBlock code = CodeBlock.of("$L", CodeBlock.of("$T.truncate(myString)", ClassName.of(StringUtils.class)));
+		assertThat(code.getImports()).containsExactly(StringUtils.class.getName());
+	}
+
 	private String writeJava(CodeBlock code) {
 		return write(code, CodeBlock.JAVA_FORMATTING_OPTIONS);
 	}