diff --git a/knplabs/knp-snappy-bundle/1.5/manifest.json b/knplabs/knp-snappy-bundle/1.5/manifest.json
index 1584176b..3c899cc1 100644
--- a/knplabs/knp-snappy-bundle/1.5/manifest.json
+++ b/knplabs/knp-snappy-bundle/1.5/manifest.json
@@ -6,7 +6,7 @@
         "config/": "%CONFIG_DIR%/"
     },
     "env": {
-        "WKHTMLTOPDF_PATH": "\"/usr/local/bin/wkhtmltopdf\"",
-        "WKHTMLTOIMAGE_PATH": "\"/usr/local/bin/wkhtmltoimage\""
+        "WKHTMLTOPDF_PATH": "/usr/local/bin/wkhtmltopdf",
+        "WKHTMLTOIMAGE_PATH": "/usr/local/bin/wkhtmltoimage"
     }
 }