diff --git a/identity-provider-mapper/src/main/java/org/gcube/keycloak/broker/oidc/mappers/UsernameFromMailMapper.java b/identity-provider-mapper/src/main/java/org/gcube/keycloak/broker/oidc/mappers/UsernameFromMailMapper.java
index 8967d31..eb5faf4 100755
--- a/identity-provider-mapper/src/main/java/org/gcube/keycloak/broker/oidc/mappers/UsernameFromMailMapper.java
+++ b/identity-provider-mapper/src/main/java/org/gcube/keycloak/broker/oidc/mappers/UsernameFromMailMapper.java
@@ -151,7 +151,7 @@ public class UsernameFromMailMapper extends AbstractClaimMapper {
 
         for (Character c : username.chars().mapToObj(e -> (char) e).collect(Collectors.toSet())) {
             if (!isChar(c) && !isDigit(c) && (c != DASH) && (c != PERIOD)) {
-                logger.infof("Replacing unneded char (%c) with %c", c, PERIOD);
+                logger.debugf("Replacing unneeded char (%c) with %c", c, PERIOD);
                 username = username.replace(c, PERIOD);
             }
         }
@@ -161,7 +161,7 @@ public class UsernameFromMailMapper extends AbstractClaimMapper {
                 || reservedUsernames.contains(username)) {
 
             if (usernameAlreadyExists) {
-                logger.infof("Username already exists: %s", username);
+                logger.debugf("Username already exists: %s", username);
             } else {
                 logger.info("Username is one of the reserved usernames");
             }
@@ -178,7 +178,7 @@ public class UsernameFromMailMapper extends AbstractClaimMapper {
                 }
             }
         }
-        logger.infof("Final computed username is: %s", username);
+        logger.debugf("Final computed username is: %s", username);
         context.setModelUsername(username);
     }