diff --git a/application/utils.inc.php b/application/utils.inc.php
index b98ae2c75..0f62fd60e 100644
--- a/application/utils.inc.php
+++ b/application/utils.inc.php
@@ -2772,7 +2772,7 @@ HTML;
 			if (!utils::IsDevelopmentEnvironment()) {
 				// Save to cache
 				$sCacheContent = "<?php\n\nreturn ".var_export($aMatchingClasses, true).";";
-				SetupUtils::builddir(dirname($sCacheFileName));
+				self::builddir(dirname($sCacheFileName));
 				file_put_contents($sCacheFileName, $sCacheContent);
 			}
 		}
@@ -3194,4 +3194,25 @@ HTML;
 	{
 		return hash('sha256', uniqid(sprintf('%x', rand()), true).sprintf('%x', rand()));
 	}
+
+	/**
+	 * Helper to build the full path of a new directory
+	 * @param $dir
+	 */
+	public static function builddir($dir)
+	{
+		if (empty($dir))
+		{
+			// avoid infinite loops :/
+			return;
+		}
+		if (!is_dir($dir))
+		{
+			$parent = dirname($dir);
+			self::builddir($parent);
+			if (!mkdir($dir) && !is_dir($dir)) {
+				throw new \RuntimeException(sprintf('Directory "%s" was not created', $dir));
+			}
+		}
+	}
 }