diff --git a/bundlebee-core/src/test/java/io/yupiik/bundlebee/core/lang/SubstitutorProducerTest.java b/bundlebee-core/src/test/java/io/yupiik/bundlebee/core/lang/SubstitutorProducerTest.java
index a5d46e21..03e81333 100644
--- a/bundlebee-core/src/test/java/io/yupiik/bundlebee/core/lang/SubstitutorProducerTest.java
+++ b/bundlebee-core/src/test/java/io/yupiik/bundlebee/core/lang/SubstitutorProducerTest.java
@@ -283,6 +283,15 @@ void jsonFileFromFile(@TempDir final Path root) throws IOException {
                 substitutor.getOrDefault("bundlebee-json-inline-file:" + file, "failed"));
     }
 
+    @Test
+    void jsonFileFromFileWithEscaping(@TempDir final Path root) throws IOException {
+        final var file = root.resolve("test.txt");
+        Files.writeString(file, "{\"foo\":\\{{dontescape}}}");
+        assertEquals(
+                "{\\\"foo\\\":{{dontescape}}}",
+                substitutor.getOrDefault("bundlebee-json-inline-file:" + file, "failed"));
+    }
+
     @Test
     void jsonFileFromResource() {
         assertEquals(