diff --git a/lib/datasource/npm/presets.js b/lib/datasource/npm/presets.js
index fe9b83c472ba5304d375ce815f516c9d979dbf53..6f1d9121ab8ad632401d4443f10451fd40e6ca3f 100644
--- a/lib/datasource/npm/presets.js
+++ b/lib/datasource/npm/presets.js
@@ -14,6 +14,11 @@ async function getPreset(pkgName, presetName = 'default') {
   }
   const presetConfig = dep['renovate-config'][presetName];
   if (!presetConfig) {
+    const presetNames = Object.keys(dep['renovate-config']);
+    logger.info(
+      { presetNames, presetName },
+      'Preset not found within renovate-config'
+    );
     throw new Error('preset not found');
   }
   return presetConfig;