diff --git a/main.go b/main.go
index 012f775..32a73f7 100644
--- a/main.go
+++ b/main.go
@@ -148,6 +148,10 @@ func RunImporter() {
 	importDir := os.Getenv("IMPORT_DIR")
 	libraryDir := os.Getenv("LIBRARY_DIR")
 
+	if importerRunning {
+		return
+	}
+
 	importerMu.Lock()
 	importerRunning = true
 	importerMu.Unlock()