diff --git a/bin/deluser.sh b/bin/deluser.sh
index d2148756e..63473012d 100755
--- a/bin/deluser.sh
+++ b/bin/deluser.sh
@@ -34,7 +34,7 @@ function print_usage()
 
 function _die($msg, $usage=false)
 {
-    fputs(STDERR, $msg . "\n");
+    fwrite(STDERR, $msg . "\n");
     if ($usage) print_usage();
     exit(1);
 }
diff --git a/bin/dumpschema.sh b/bin/dumpschema.sh
index 32c90ac13..d1d2999d6 100755
--- a/bin/dumpschema.sh
+++ b/bin/dumpschema.sh
@@ -91,7 +91,8 @@ else {
 
 $schema->disconnect();
 
-if ($error && !$_SERVER['REMOTE_ADDR'])
-	fputs(STDERR, $error);
+if ($error && !$_SERVER['REMOTE_ADDR']) {
+	fwrite(STDERR, $error);
+}
 
 ?>
diff --git a/bin/package2composer.sh b/bin/package2composer.sh
index 3e5c081f2..5f3438cd0 100755
--- a/bin/package2composer.sh
+++ b/bin/package2composer.sh
@@ -97,7 +97,7 @@ else if (defined('JSON_PRETTY_PRINT')) {
     echo json_encode($data, $flags);
 }
 else {
-    fputs(STDERR,
+    fwrite(STDERR,
 "FAILED! composer.phar not found in current directory.
 
 Please download it from http://getcomposer.org/download/ or with
diff --git a/plugins/password/drivers/smb.php b/plugins/password/drivers/smb.php
index eebb3a3b4..0ffcbda57 100644
--- a/plugins/password/drivers/smb.php
+++ b/plugins/password/drivers/smb.php
@@ -48,9 +48,9 @@ class rcube_smb_password
         $cmd      = $bin . ' -r ' . escapeshellarg($host) . ' -s -U "' . escapeshellarg($username) . '" > ' . $tmpfile . ' 2>&1';
         $handle   = @popen($cmd, 'w');
 
-        fputs($handle, $currpass."\n");
-        fputs($handle, $newpass."\n");
-        fputs($handle, $newpass."\n");
+        fwrite($handle, $currpass."\n");
+        fwrite($handle, $newpass."\n");
+        fwrite($handle, $newpass."\n");
         @pclose($handle);
         $res = file($tmpfile);
         unlink($tmpfile);
diff --git a/program/lib/Roundcube/rcube_output.php b/program/lib/Roundcube/rcube_output.php
index 5c83ba99d..ab8fabeb1 100644
--- a/program/lib/Roundcube/rcube_output.php
+++ b/program/lib/Roundcube/rcube_output.php
@@ -273,7 +273,7 @@ abstract class rcube_output
     public function raise_error($code, $message)
     {
         // STUB: to be overloaded by specific output classes
-        fputs(STDERR, "Error $code: $message\n");
+        fwrite(STDERR, "Error $code: $message\n");
         exit(-1);
     }