diff --git a/packages/components/nodes/chains/LLMChain/LLMChain.ts b/packages/components/nodes/chains/LLMChain/LLMChain.ts
index c9e491650..5088b34d4 100644
--- a/packages/components/nodes/chains/LLMChain/LLMChain.ts
+++ b/packages/components/nodes/chains/LLMChain/LLMChain.ts
@@ -116,7 +116,7 @@ const runPrediction = async (
      */
     const promptValues = handleEscapeCharacters(promptValuesRaw, true)
 
-    if (inputVariables.length > 0) {
+    if (promptValues && inputVariables.length > 0) {
         let seen: string[] = []
 
         for (const variable of inputVariables) {