diff --git a/libcorpus2_whole/corpus.h b/libcorpus2_whole/corpus.h
index 85c5caf294220456a968a204a328a405f279eb40..b4ca6e812738e5179ead9023d1907eea2434f3a2 100644
--- a/libcorpus2_whole/corpus.h
+++ b/libcorpus2_whole/corpus.h
@@ -50,7 +50,7 @@ public:
 
 	/// Next document in corpus
 	boost::shared_ptr<Document> next_document() {
-		static boost::shared_ptr<Document> _empty_doc_ptr;
+		boost::shared_ptr<Document> _empty_doc_ptr;
 		if (!this->set_) {
 			if (this->documents_.size() == 0) {
 				return _empty_doc_ptr;