diff --git a/config.php-dist b/config.php-dist
old mode 100755
new mode 100644
index e83fdcfdc..824c378a7
--- a/config.php-dist
+++ b/config.php-dist
@@ -3,11 +3,11 @@
 	// *** Database configuration (important!) ***
 	// *******************************************
 
-	define('DB_TYPE', "%DB_TYPE"); // pgsql or mysql
-	define('DB_HOST', "%DB_HOST");
-	define('DB_USER', "%DB_USER");
-	define('DB_NAME', "%DB_NAME");
-	define('DB_PASS', "%DB_PASS");
+	define('DB_TYPE', '%DB_TYPE'); // pgsql or mysql
+	define('DB_HOST', '%DB_HOST');
+	define('DB_USER', '%DB_USER');
+	define('DB_NAME', '%DB_NAME');
+	define('DB_PASS', '%DB_PASS');
 	define('DB_PORT', '%DB_PORT'); // usually 5432 for PostgreSQL, 3306 for MySQL
 
 	define('MYSQL_CHARSET', 'UTF8');
diff --git a/install/index.php b/install/index.php
index ea88d1877..15fe1aa5a 100644
--- a/install/index.php
+++ b/install/index.php
@@ -153,14 +153,16 @@
 
 		$rv = file_get_contents("../config.php-dist");
 
+		$escape_chars = "\\'";
+
 		$settings = [
 			"%DB_TYPE" => $DB_TYPE == 'pgsql' ? 'pgsql' : 'mysql',
-			"%DB_HOST" => addslashes($DB_HOST),
-			"%DB_USER" => addslashes($DB_USER),
-			"%DB_NAME" => addslashes($DB_NAME),
-			"%DB_PASS" => addslashes($DB_PASS),
-			"%DB_PORT" => intval($DB_PORT),
-			"%SELF_URL_PATH" => addslashes($SELF_URL_PATH)
+			"%DB_HOST" => addcslashes($DB_HOST, $escape_chars),
+			"%DB_USER" => addcslashes($DB_USER, $escape_chars),
+			"%DB_NAME" => addcslashes($DB_NAME, $escape_chars),
+			"%DB_PASS" => addcslashes($DB_PASS, $escape_chars),
+			"%DB_PORT" => $DB_PORT ? intval($DB_PORT) : '',
+			"%SELF_URL_PATH" => addcslashes($SELF_URL_PATH, $escape_chars)
 		];
 
 		$rv = str_replace(array_keys($settings), array_values($settings), $rv);