diff --git a/src/main/java/com/ericsson/gerrit/plugins/highavailability/Configuration.java b/src/main/java/com/ericsson/gerrit/plugins/highavailability/Configuration.java
index cdca21b..e0d5a50 100644
--- a/src/main/java/com/ericsson/gerrit/plugins/highavailability/Configuration.java
+++ b/src/main/java/com/ericsson/gerrit/plugins/highavailability/Configuration.java
@@ -123,7 +123,7 @@
       log.atInfo().log("Loading configuration from %s", fileConfigFileName);
       cfg.load();
     } catch (IOException | ConfigInvalidException e) {
-      log.atSevere().withCause(e).log("Unable to load configuration from " + fileConfigFileName);
+      log.atSevere().withCause(e).log("Unable to load configuration from %s", fileConfigFileName);
     }
     return cfg;
   }
diff --git a/src/main/java/com/ericsson/gerrit/plugins/highavailability/autoreindex/ChangeReindexRunnable.java b/src/main/java/com/ericsson/gerrit/plugins/highavailability/autoreindex/ChangeReindexRunnable.java
index c0b60c3..aa44770 100644
--- a/src/main/java/com/ericsson/gerrit/plugins/highavailability/autoreindex/ChangeReindexRunnable.java
+++ b/src/main/java/com/ericsson/gerrit/plugins/highavailability/autoreindex/ChangeReindexRunnable.java
@@ -88,7 +88,7 @@
                         return true;
                       }
                       log.atWarning().withCause(cnr.error().get()).log(
-                          "Error fetching change " + cnr.id());
+                          "Error fetching change %s", cnr.id());
                       return false;
                     })
                 .map(cnr -> cnr.notes().getChange());
diff --git a/src/main/java/com/ericsson/gerrit/plugins/highavailability/index/IndexEventLocks.java b/src/main/java/com/ericsson/gerrit/plugins/highavailability/index/IndexEventLocks.java
index 3fd26db..bbff4ee 100644
--- a/src/main/java/com/ericsson/gerrit/plugins/highavailability/index/IndexEventLocks.java
+++ b/src/main/java/com/ericsson/gerrit/plugins/highavailability/index/IndexEventLocks.java
@@ -65,7 +65,7 @@
           String.format(
               "Acquisition of the locking of %s timed out after %d msec: consider increasing the number of shards",
               indexId, WAIT_TIMEOUT_MS);
-      log.atWarning().log(timeoutMessage);
+      log.atWarning().log("%s", timeoutMessage);
       lockAcquireTimeoutCallback.invoke();
       CompletableFuture<?> failureFuture = new CompletableFuture<>();
       failureFuture.completeExceptionally(new InterruptedException(timeoutMessage));
diff --git a/src/main/java/com/ericsson/gerrit/plugins/highavailability/websession/file/FileBasedWebsessionCache.java b/src/main/java/com/ericsson/gerrit/plugins/highavailability/websession/file/FileBasedWebsessionCache.java
index 674de10..92253f7 100644
--- a/src/main/java/com/ericsson/gerrit/plugins/highavailability/websession/file/FileBasedWebsessionCache.java
+++ b/src/main/java/com/ericsson/gerrit/plugins/highavailability/websession/file/FileBasedWebsessionCache.java
@@ -210,7 +210,7 @@
             "Entry %s in cache %s has an incompatible class and can't be"
                 + " deserialized. Invalidating entry.",
             path, websessionsDir);
-        log.atFine().withCause(e).log(e.getMessage());
+        log.atFine().withCause(e).log("%s", e.getMessage());
         invalidate(path.getFileName().toString());
       } catch (IOException e) {
         log.atWarning().withCause(e).log("Cannot read cache %s", websessionsDir);