diff --git a/lib/SimpleSAML/Logger/ErrorLogLoggingHandler.php b/lib/SimpleSAML/Logger/ErrorLogLoggingHandler.php
index 5d5f6cafe4c3feb4551e5d944b35c95fa934a0bc..77ef47087bc62e19b08ef12776d87ee7ead3138e 100644
--- a/lib/SimpleSAML/Logger/ErrorLogLoggingHandler.php
+++ b/lib/SimpleSAML/Logger/ErrorLogLoggingHandler.php
@@ -48,7 +48,8 @@ class ErrorLogLoggingHandler implements LoggingHandlerInterface
      */
     public function __construct(Configuration $config)
     {
-        $this->processname = $config->getString('logging.processname', 'SimpleSAMLphp');
+        // Remove any non-printable characters before storing
+        $this->processname = preg_replace('/[\x00-\x1F\x7F\xA0]/u', '', $config->getString('logging.processname', 'SimpleSAMLphp'));
     }
 
 
diff --git a/lib/SimpleSAML/Logger/FileLoggingHandler.php b/lib/SimpleSAML/Logger/FileLoggingHandler.php
index 745a1ed6a02db92cf6acf1b7ea284bd72bc3c93d..c07ec21feea0c3e568fc88857287c0805c9067d8 100644
--- a/lib/SimpleSAML/Logger/FileLoggingHandler.php
+++ b/lib/SimpleSAML/Logger/FileLoggingHandler.php
@@ -57,7 +57,9 @@ class FileLoggingHandler implements LoggingHandlerInterface
         // get the metadata handler option from the configuration
         $this->logFile = $config->getPathValue('loggingdir', 'log/') .
             $config->getString('logging.logfile', 'simplesamlphp.log');
-        $this->processname = $config->getString('logging.processname', 'SimpleSAMLphp');
+
+        // Remove any non-printable characters before storing
+        $this->processname = preg_replace('/[\x00-\x1F\x7F\xA0]/u', '', $config->getString('logging.processname', 'SimpleSAMLphp'));
 
         if (@file_exists($this->logFile)) {
             if (!@is_writeable($this->logFile)) {
diff --git a/lib/SimpleSAML/Logger/StandardErrorLoggingHandler.php b/lib/SimpleSAML/Logger/StandardErrorLoggingHandler.php
index 02b31eab87694d81acd4eae14d1dffba423b176b..9a803d1f29a4a37d1eda16445a0cdca742dd6dad 100644
--- a/lib/SimpleSAML/Logger/StandardErrorLoggingHandler.php
+++ b/lib/SimpleSAML/Logger/StandardErrorLoggingHandler.php
@@ -23,7 +23,8 @@ class StandardErrorLoggingHandler extends FileLoggingHandler
      */
     public function __construct(Configuration $config)
     {
-        $this->processname = $config->getString('logging.processname', 'SimpleSAMLphp');
+        // Remove any non-printable characters before storing
+        $this->processname = preg_replace('/[\x00-\x1F\x7F\xA0]/u', '', $config->getString('logging.processname', 'SimpleSAMLphp'));
         $this->logFile = 'php://stderr';
     }
 }
diff --git a/lib/SimpleSAML/Logger/SyslogLoggingHandler.php b/lib/SimpleSAML/Logger/SyslogLoggingHandler.php
index 49da62d8296d11a9ecbb78b8326a7587113ac20f..34383c06683433b3920c383b9bb54a2f0713a92f 100644
--- a/lib/SimpleSAML/Logger/SyslogLoggingHandler.php
+++ b/lib/SimpleSAML/Logger/SyslogLoggingHandler.php
@@ -31,7 +31,8 @@ class SyslogLoggingHandler implements LoggingHandlerInterface
     {
         $facility = $config->getInteger('logging.facility', defined('LOG_LOCAL5') ? constant('LOG_LOCAL5') : LOG_USER);
 
-        $processname = $config->getString('logging.processname', 'SimpleSAMLphp');
+        // Remove any non-printable characters before storing
+        $processname = preg_replace('/[\x00-\x1F\x7F\xA0]/u', '', $config->getString('logging.processname', 'SimpleSAMLphp'));
 
         // Setting facility to LOG_USER (only valid in Windows), enable log level rewrite on windows systems
         if (Utils\System::getOS() === Utils\System::WINDOWS) {