diff --git a/test/TestAssets/test.png b/test/TestAssets/test.png
deleted file mode 100644
index 752f5dd..0000000
Binary files a/test/TestAssets/test.png and /dev/null differ
diff --git a/test/TestAssets/test.txt b/test/TestAssets/test.txt
new file mode 100644
index 0000000..002e41c
--- /dev/null
+++ b/test/TestAssets/test.txt
@@ -0,0 +1,2 @@
+--
+This is a dummy text for a sake of the test.
\ No newline at end of file
diff --git a/test/TestModules/TestSchemaProcessor.js b/test/TestModules/TestSchemaProcessor.js
index b7b06a5..b18effc 100644
--- a/test/TestModules/TestSchemaProcessor.js
+++ b/test/TestModules/TestSchemaProcessor.js
@@ -188,7 +188,7 @@ module.exports = class TestSchemaProcessor {
      * @returns {Promise<Buffer>}
      */
     readTestBlob() {
-        const blobPath = path.join(__dirname, '..', 'TestAssets', 'test.png');
+        const blobPath = path.join(__dirname, '..', 'TestAssets', 'test.txt');
         return this.readFile(blobPath);
     }