diff --git a/spring-modulith-apt/src/test/java/org/springframework/modulith/apt/SpringModulithProcessorUnitTests.java b/spring-modulith-apt/src/test/java/org/springframework/modulith/apt/SpringModulithProcessorUnitTests.java
index ea4daf2d6..94887f08c 100644
--- a/spring-modulith-apt/src/test/java/org/springframework/modulith/apt/SpringModulithProcessorUnitTests.java
+++ b/spring-modulith-apt/src/test/java/org/springframework/modulith/apt/SpringModulithProcessorUnitTests.java
@@ -24,8 +24,11 @@
 import io.toolisticon.cute.CuteApi.DoCustomAssertions;
 
 import java.io.File;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
 
 import org.junit.jupiter.api.Test;
+import org.springframework.boot.json.BasicJsonParser;
 
 import com.jayway.jsonpath.JsonPath;
 
@@ -71,6 +74,27 @@ void extractsJavadocFromMethodWithClassNestedInInterfaceAsParameter() {
 		});
 	}
 
+	@Test // GH-1685
+	void javadocWithDoubleQuotesProducesValidJson() throws Exception {
+
+		assertSucceded(getSourceFile("SampleComponentWithQuotes"));
+
+		var content = Files.readString(new File(JSON_LOCATION).toPath(), StandardCharsets.UTF_8);
+
+		assertThatNoException()
+				.as("BasicJsonParser must be able to parse the generated JSON without errors")
+				.isThrownBy(() -> new BasicJsonParser().parseList(content));
+
+		var context = JsonPath.parse(new File(JSON_LOCATION));
+		var comment = context.read(
+				"$[?(@.name == 'example.SampleComponentWithQuotes')].methods[0].comment",
+				String[].class)[0];
+
+		assertThat(comment)
+				.as("Javadoc comment must preserve literal double-quote characters")
+				.contains("\"foo\"", "\"bar\"");
+	}
+
 	@Test // GH-1430
 	void extractsPackageComments() throws Exception {
 
diff --git a/spring-modulith-apt/src/test/resources/example/SampleComponentWithQuotes.java b/spring-modulith-apt/src/test/resources/example/SampleComponentWithQuotes.java
new file mode 100644
index 000000000..11798591a
--- /dev/null
+++ b/spring-modulith-apt/src/test/resources/example/SampleComponentWithQuotes.java
@@ -0,0 +1,16 @@
+package example;
+
+/**
+ * Component whose method Javadoc contains literal double-quote characters.
+ */
+class SampleComponentWithQuotes {
+
+	/**
+	 * Finds something by key. Example:
+	 *
+	 * <pre>
+	 * findByKey("foo", "bar")
+	 * </pre>
+	 */
+	void findByKey(String a, String b) {}
+}