diff --git a/README.md b/README.md
index 982e87f8..aee6421c 100644
--- a/README.md
+++ b/README.md
@@ -72,4 +72,8 @@ Let's suppose you have a workflow with a job in it that at the end uploads an ar
     #  "fail", "warn", "ignore"
     # default fail
     if_no_artifact_found: fail
+    # Optional, ignore forks when searching for artifacts
+    # when a branch is specified, this is defaulted to false.
+    # default true
+    allow_forks: false
 ```
diff --git a/action.yml b/action.yml
index 66e9d656..27dfcbf0 100644
--- a/action.yml
+++ b/action.yml
@@ -55,6 +55,10 @@ inputs:
     description: Where to unpack the artifact
     required: false
     default: "./"
+  allow_forks:
+    description: Allow forks
+    required: false
+    default: true
   check_artifacts:
     description: Check workflow run whether it has an artifact
     required: false
diff --git a/main.js b/main.js
index 29a2901d..670d2ae0 100644
--- a/main.js
+++ b/main.js
@@ -38,8 +38,14 @@ async function main() {
         let runNumber = core.getInput("run_number")
         let checkArtifacts = core.getBooleanInput("check_artifacts")
         let searchArtifacts = core.getBooleanInput("search_artifacts")
+        let allowForks = core.getBooleanInput("allow_forks")
         let dryRun = core.getInput("dry_run")
 
+        // Using allow_forks lets the user accept any fork, in any situation,
+        // But if it's not set, we forbid forks if the user is trying to download
+        // artifacts from a given branch.
+        const willAcceptForks = allowForks || !branch;
+
         const client = github.getOctokit(token)
 
         core.info(`==> Repository: ${owner}/${repo}`)
@@ -120,7 +126,7 @@ async function main() {
                     if (workflowConclusion && (workflowConclusion != run.conclusion && workflowConclusion != run.status)) {
                         continue
                     }
-                    if (run.head_repository.full_name !== `${owner}/${repo}`) {
+                    if (!willAcceptForks && run.head_repository.full_name !== `${owner}/${repo}`) {
                         core.info(`==> Skipping run from fork: ${run.head_repository.full_name}`)
                         continue;
                     }