diff --git a/server/src/main/java/mucsi96/traininglog/weight/WeightService.java b/server/src/main/java/mucsi96/traininglog/weight/WeightService.java
index 297eb7f..e444496 100644
--- a/server/src/main/java/mucsi96/traininglog/weight/WeightService.java
+++ b/server/src/main/java/mucsi96/traininglog/weight/WeightService.java
@@ -30,7 +30,7 @@ public Optional<Weight> getTodayWeight() {
     log.info("Getting today weight from {} to {}", startTime, endTime);
     List<Weight> weights = weightRepository.findAllByCreatedAtBetween(startTime, endTime);
     Optional<Weight> result = weights.stream().findFirst();
-    log.info("Got {}", result.isPresent() ? result.get().getValue() : '?');
+    log.info("Got {}", result.isPresent() ? result.get().getValue() : "null");
     return result;
   }
 }
diff --git a/server/src/main/java/mucsi96/traininglog/withings/WithingsService.java b/server/src/main/java/mucsi96/traininglog/withings/WithingsService.java
index a87c254..8c3fd8d 100644
--- a/server/src/main/java/mucsi96/traininglog/withings/WithingsService.java
+++ b/server/src/main/java/mucsi96/traininglog/withings/WithingsService.java
@@ -90,7 +90,7 @@ private Optional<Weight> getFirstMeasureValue(WithingsGetMeasureResponseBody mea
   public Optional<Weight> getTodayWeight(OAuth2AuthorizedClient authorizedClient) {
     log.info("Getting today first weight measure");
     Optional<Weight> result = getFirstMeasureValue(getMeasure(authorizedClient));
-    log.info("Got {}", result.isPresent() ? result.get().getValue() : '?');
+    log.info("Got {}", result.isPresent() ? result.get().getValue() : "null");
     return result;
   }
 }