diff --git a/src/main/java/eu/hbp/mip/controllers/ExperimentApi.java b/src/main/java/eu/hbp/mip/controllers/ExperimentApi.java
index cc0df8794ecb3b35be7c7a4f3abe2faf22581245..99848086ec07a1c17c28adc895f3fe6395fcefc8 100644
--- a/src/main/java/eu/hbp/mip/controllers/ExperimentApi.java
+++ b/src/main/java/eu/hbp/mip/controllers/ExperimentApi.java
@@ -105,7 +105,7 @@ public class ExperimentApi extends WokenClientController {
             experimentUuid = UUID.fromString(uuid);
         } catch (IllegalArgumentException iae) {
             LOGGER.trace("Invalid UUID", iae);
-            LOGGER.warn("An invalid Experiment UUID was received !");
+            LOGGER.warn("An invalid Experiment UUID was received ! " + uuid);
             return ResponseEntity.badRequest().body("Invalid Experiment UUID");
         }