diff --git a/config.xsd b/config.xsd
index 44914705e..4e06bf9d8 100644
--- a/config.xsd
+++ b/config.xsd
@@ -52,14 +52,7 @@
         <xs:choice maxOccurs="unbounded">
             <xs:element name="directory" minOccurs="0" maxOccurs="unbounded" type="ProjectDirectoryAttributeType" />
             <xs:element name="file" minOccurs="0" maxOccurs="unbounded" type="NameAttributeType" />
-            <xs:element name="ignoreFiles" minOccurs="0" maxOccurs="1">
-                <xs:complexType>
-                    <xs:choice maxOccurs="unbounded">
-                        <xs:element name="directory" minOccurs="0" maxOccurs="unbounded" type="NameAttributeType" />
-                        <xs:element name="file" minOccurs="0" maxOccurs="unbounded" type="NameAttributeType" />
-                    </xs:choice>
-                </xs:complexType>
-            </xs:element>
+            <xs:element name="ignoreFiles" minOccurs="0" maxOccurs="1" type="IgnoreFilesType" />
         </xs:choice>
     </xs:complexType>
 
@@ -67,6 +60,15 @@
         <xs:attribute name="name" type="xs:string" use="required" />
     </xs:complexType>
 
+    <xs:complexType name="IgnoreFilesType">
+        <xs:choice maxOccurs="unbounded">
+            <xs:element name="directory" minOccurs="0" maxOccurs="unbounded" type="NameAttributeType" />
+            <xs:element name="file" minOccurs="0" maxOccurs="unbounded" type="NameAttributeType" />
+        </xs:choice>
+
+        <xs:attribute name="allowMissingFiles" type="xs:string" />
+    </xs:complexType>
+
     <xs:complexType name="ProjectDirectoryAttributeType">
         <xs:attribute name="name" type="xs:string" use="required" />
         <xs:attribute name="ignoreTypeStats" type="xs:string" />
diff --git a/src/Psalm/Config/FileFilter.php b/src/Psalm/Config/FileFilter.php
index 341c4f9f5..5aa5c030a 100644
--- a/src/Psalm/Config/FileFilter.php
+++ b/src/Psalm/Config/FileFilter.php
@@ -81,6 +81,8 @@ class FileFilter
         $base_dir,
         $inclusive
     ) {
+        $allow_missing_files = ((string) $e['allowMissingFiles']) === 'true';
+
         $filter = new static($inclusive);
 
         if ($e->directory) {
@@ -110,6 +112,10 @@ class FileFilter
                     );
 
                     if (empty($globs)) {
+                        if ($allow_missing_files) {
+                            continue;
+                        }
+
                         echo 'Could not resolve config path to ' . $base_dir . DIRECTORY_SEPARATOR .
                             (string)$directory['name'] . PHP_EOL;
                         exit(1);
@@ -117,11 +123,19 @@ class FileFilter
 
                     foreach ($globs as $glob_index => $directory_path) {
                         if (!$directory_path) {
+                            if ($allow_missing_files) {
+                                continue;
+                            }
+
                             echo 'Could not resolve config path to ' . $base_dir . DIRECTORY_SEPARATOR .
                                 (string)$directory['name'] . ':' . $glob_index . PHP_EOL;
                             exit(1);
                         }
 
+                        if (!$directory_path) {
+                            continue;
+                        }
+
                         if ($ignore_type_stats && $filter instanceof ProjectFileFilter) {
                             $filter->ignore_type_stats[$directory_path] = true;
                         }
@@ -138,6 +152,10 @@ class FileFilter
                 $directory_path = realpath($prospective_directory_path);
 
                 if (!$directory_path) {
+                    if ($allow_missing_files) {
+                        continue;
+                    }
+
                     echo 'Could not resolve config path to ' . $base_dir . DIRECTORY_SEPARATOR .
                         (string)$directory['name'] . PHP_EOL;
                     exit(1);
diff --git a/tests/ConfigTest.php b/tests/ConfigTest.php
index b53cb5f61..ddad0edd2 100644
--- a/tests/ConfigTest.php
+++ b/tests/ConfigTest.php
@@ -139,6 +139,33 @@ class ConfigTest extends TestCase
         $this->assertFalse($config->isInProjectDirs(realpath('examples/StringAnalyzer.php')));
     }
 
+    /**
+     * @return void
+     */
+    public function testIgnoreMissingProjectDirectory()
+    {
+        $this->project_analyzer = $this->getProjectAnalyzerWithConfig(
+            Config::loadFromXML(
+                dirname(__DIR__),
+                '<?xml version="1.0"?>
+                <psalm>
+                    <projectFiles>
+                        <directory name="src" />
+                        <ignoreFiles allowMissingFiles="true">
+                            <directory name="does/not/exist" />
+                        </ignoreFiles>
+                    </projectFiles>
+                </psalm>'
+            )
+        );
+
+        $config = $this->project_analyzer->getConfig();
+
+        $this->assertTrue($config->isInProjectDirs(realpath('src/Psalm/Type.php')));
+        $this->assertFalse($config->isInProjectDirs(realpath('does/not/exist/FileAnalyzer.php')));
+        $this->assertFalse($config->isInProjectDirs(realpath('examples/StringAnalyzer.php')));
+    }
+
     /**
      * @return void
      */