diff --git a/leshan-core/src/test/java/org/eclipse/leshan/core/node/codec/LwM2mNodeDecoderTest.java b/leshan-core/src/test/java/org/eclipse/leshan/core/node/codec/LwM2mNodeDecoderTest.java
index 3dde2e0602..11ed0a165c 100644
--- a/leshan-core/src/test/java/org/eclipse/leshan/core/node/codec/LwM2mNodeDecoderTest.java
+++ b/leshan-core/src/test/java/org/eclipse/leshan/core/node/codec/LwM2mNodeDecoderTest.java
@@ -909,6 +909,18 @@ public void senml_json_decode_single_resource() {
         assertEquals(20.0, resource.getValue());
     }
 
+    @Test
+    public void senml_json_decode_single_resource_using_exponantial_notation() {
+        String payload = "[{\"bn\":\"/3/0/13\",\"v\":1.638435E9}]";
+        LwM2mResource resource = decoder.decode(payload.getBytes(), ContentFormat.SENML_JSON, new LwM2mPath("/3/0/13"),
+                model, LwM2mResource.class);
+
+        assertNotNull(resource);
+        assertTrue(!resource.isMultiInstances());
+        assertEquals(13, resource.getId());
+        assertEquals(new Date(1638435000000l), resource.getValue());
+    }
+
     @Test
     public void senml_json_decode_multiple_resource() {
         StringBuilder payload = new StringBuilder();