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 13f202d..39bf9ca 100644
--- a/src/main/java/com/ericsson/gerrit/plugins/highavailability/Configuration.java
+++ b/src/main/java/com/ericsson/gerrit/plugins/highavailability/Configuration.java
@@ -70,6 +70,7 @@
     } catch (IllegalArgumentException e) {
       log.error(String.format(
           "invalid value for %s; using default value %d", name, defaultValue));
+      log.debug("Failed retrieve integer value: " + e.getMessage(), e);
       return defaultValue;
     }
   }