diff --git a/src/Mapper.php b/src/Mapper.php
index d83d89d..dbb289b 100644
--- a/src/Mapper.php
+++ b/src/Mapper.php
@@ -66,7 +66,7 @@ public function mapContrib(InstallationManager $im, RepositoryManager $rm)
                 }
                 $name = explode('/', $package->getPrettyName())[1];
                 $mapRef =& $typeInstallMap[$drupalType][rtrim($installPath, '/')] ;
-                if ($drupalType === 'core') {
+                if (in_array($drupalType, ['module', 'theme'])) {
                     $mapRef = $typePathMap[$drupalType];
                 }
                 else {