diff --git a/dist/index.js b/dist/index.js
index f9a8a8f..a61448d 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -7827,7 +7827,9 @@ function getInputs() {
     const name = core.getInput(constants_1.Inputs.Name);
     const path = core.getInput(constants_1.Inputs.Path, { required: true });
     const ifNoFilesFound = core.getInput(constants_1.Inputs.IfNoFilesFound);
-    const noFileBehavior = constants_1.NoFileOptions[ifNoFilesFound];
+    const noFileBehavior = !ifNoFilesFound || ifNoFilesFound === ''
+        ? constants_1.NoFileOptions.warn
+        : constants_1.NoFileOptions[ifNoFilesFound];
     if (!noFileBehavior) {
         core.setFailed(`Unrecognized ${constants_1.Inputs.IfNoFilesFound} input. Provided: ${ifNoFilesFound}. Available options: ${Object.keys(constants_1.NoFileOptions)}`);
     }
diff --git a/src/input-helper.ts b/src/input-helper.ts
index 8344823..7c141d6 100644
--- a/src/input-helper.ts
+++ b/src/input-helper.ts
@@ -10,7 +10,10 @@ export function getInputs(): UploadInputs {
   const path = core.getInput(Inputs.Path, {required: true})
 
   const ifNoFilesFound = core.getInput(Inputs.IfNoFilesFound)
-  const noFileBehavior: NoFileOptions = NoFileOptions[ifNoFilesFound]
+  const noFileBehavior: NoFileOptions =
+    !ifNoFilesFound || ifNoFilesFound === ''
+      ? NoFileOptions.warn
+      : NoFileOptions[ifNoFilesFound]
 
   if (!noFileBehavior) {
     core.setFailed(