diff --git a/src/addons.js b/src/addons.js
index 058a16295..e58897152 100644
--- a/src/addons.js
+++ b/src/addons.js
@@ -287,7 +287,7 @@ function teardownOauth(app, options, callback) {
     debugApp(app, 'teardownOauth');
 
     clients.delByAppIdAndType(app.id, clients.TYPE_OAUTH, function (error) {
-        if (error && error.reason !== ClientsError.NOT_FOUND) console.error(error);
+        if (error && error.reason !== ClientsError.NOT_FOUND) debug(error);
 
         appdb.unsetAddonConfig(app.id, 'oauth', callback);
     });
@@ -332,7 +332,7 @@ function teardownSimpleAuth(app, options, callback) {
     debugApp(app, 'teardownSimpleAuth');
 
     clients.delByAppIdAndType(app.id, clients.TYPE_SIMPLE_AUTH, function (error) {
-        if (error && error.reason !== ClientsError.NOT_FOUND) console.error(error);
+        if (error && error.reason !== ClientsError.NOT_FOUND) debug(error);
 
         appdb.unsetAddonConfig(app.id, 'simpleauth', callback);
     });
diff --git a/src/apps.js b/src/apps.js
index e3b9d02a2..4444d23d3 100644
--- a/src/apps.js
+++ b/src/apps.js
@@ -250,7 +250,7 @@ function getDuplicateErrorDetails(location, portBindings, error) {
 
     var match = error.message.match(/ER_DUP_ENTRY: Duplicate entry '(.*)' for key/);
     if (!match) {
-        console.error('Unexpected SQL error message.', error);
+        debug('Unexpected SQL error message.', error);
         return new AppsError(AppsError.INTERNAL_ERROR);
     }
 
diff --git a/src/cloudron.js b/src/cloudron.js
index dd04b4862..d98307414 100644
--- a/src/cloudron.js
+++ b/src/cloudron.js
@@ -451,7 +451,7 @@ function sendHeartbeat() {
 function sendAliveStatus(callback) {
     if (typeof callback !== 'function') {
         callback = function (error) {
-            if (error && error.reason !== CloudronError.INTERNAL_ERROR) console.error(error);
+            if (error && error.reason !== CloudronError.INTERNAL_ERROR) debug(error);
             else if (error) debug(error);
         };
     }
@@ -684,7 +684,7 @@ function update(boxUpdateInfo, auditSource, callback) {
         debug('Starting upgrade');
         doUpgrade(boxUpdateInfo, function (error) {
             if (error) {
-                console.error('Upgrade failed with error:', error);
+                debug('Upgrade failed with error:', error);
                 locker.unlock(locker.OP_BOX_UPDATE);
             }
         });
@@ -692,7 +692,7 @@ function update(boxUpdateInfo, auditSource, callback) {
         debug('Starting update');
         doUpdate(boxUpdateInfo, function (error) {
             if (error) {
-                console.error('Update failed with error:', error);
+                debug('Update failed with error:', error);
                 locker.unlock(locker.OP_BOX_UPDATE);
             }
         });
diff --git a/src/taskmanager.js b/src/taskmanager.js
index 6cf115327..a7b81f5df 100644
--- a/src/taskmanager.js
+++ b/src/taskmanager.js
@@ -26,7 +26,7 @@ var gActiveTasks = { };
 var gPendingTasks = [ ];
 
 var TASK_CONCURRENCY = 3;
-var NOOP_CALLBACK = function (error) { if (error) console.error(error); };
+var NOOP_CALLBACK = function (error) { if (error) debug(error); };
 var gPaused = true;
 
 // resume app tasks when platform is ready or after a crash
diff --git a/src/updatechecker.js b/src/updatechecker.js
index cab45df78..974173915 100644
--- a/src/updatechecker.js
+++ b/src/updatechecker.js
@@ -165,7 +165,7 @@ function checkAppUpdates(callback) {
                 } else {
                     // only send notifications if update pattern is 'never'
                     settings.getAutoupdatePattern(function (error, result) {
-                        if (error) return console.error(error);
+                        if (error) return debug(error);
                         if (result !== constants.AUTOUPDATE_PATTERN_NEVER) return;
 
                         debug('Notifying user of app update for %s from %s to %s', app.id, app.manifest.version, updateInfo.manifest.version);
@@ -219,7 +219,7 @@ function checkBoxUpdates(callback) {
             } else {
                 // only send notifications if update pattern is 'never'
                 settings.getAutoupdatePattern(function (error, result) {
-                    if (error) return console.error(error);
+                    if (error) return debug(error);
                     if (result !== constants.AUTOUPDATE_PATTERN_NEVER) return;
 
                     mailer.boxUpdateAvailable(updateInfo.version, updateInfo.changelog);
diff --git a/src/user.js b/src/user.js
index a836eb011..4fbee320f 100644
--- a/src/user.js
+++ b/src/user.js
@@ -449,7 +449,7 @@ function setGroups(userId, groupIds, callback) {
 
             if ((isAdmin && !wasAdmin) || (!isAdmin && wasAdmin)) {
                 getUser(userId, function (error, result) {
-                    if (error) return console.error('Failed to send admin change mail.', error);
+                    if (error) return debug('Failed to send admin change mail.', error);
 
                     mailer.adminChanged(result, isAdmin);
                 });