diff --git a/src/test/java/net/masterthought/cucumber/json/EmbeddingTest.java b/src/test/java/net/masterthought/cucumber/json/EmbeddingTest.java
index 01c410192..6e491e9bd 100644
--- a/src/test/java/net/masterthought/cucumber/json/EmbeddingTest.java
+++ b/src/test/java/net/masterthought/cucumber/json/EmbeddingTest.java
@@ -133,6 +133,23 @@ public void getExtension_ReturnsFileExtension() {
         assertThat(actualExtension).isEqualTo(this.fileName.split("\\.")[1]);
     }
 
+    @Test
+    public void getExtension_UsesExtensionFromNameWhenMIMETypeIsUnknown() {
+        // Arrange
+        String mimeType = "unknown/mimetype";
+        String data = "c29tZSBkYXRh";
+        String name = "example.docx";
+
+        // Creating an embedding here with an unknown MIME type and a name containing a file extension
+        Embedding embedding = new Embedding(mimeType, data, name);
+
+        // Act
+        String actualExtension = embedding.getExtension();
+
+        // Assert
+        assertThat(actualExtension).isEqualTo("docx");
+    }
+
     @Test
     public void getName_ReturnsNull() {
         // given