diff --git a/src/obi_clean.c b/src/obi_clean.c
index 2851cc0..2534c95 100755
--- a/src/obi_clean.c
+++ b/src/obi_clean.c
@@ -409,8 +409,7 @@ int obi_clean(const char* dms_name,
 			stop = true;
 		}
 
-		#pragma omp parallel default(none) \
-					 	 	 shared(thread_count, seq_count, blob_array, complete_sample_count_array, alignment_result_array, \
+		#pragma omp parallel shared(thread_count, seq_count, blob_array, complete_sample_count_array, alignment_result_array, \
 					 	 			 stop, blob1, i, obi_errno, keep_running, stderr, max_ratio, iseq_column, i_view, \
 									 similarity_mode, reference, normalize, threshold, ktable, status_column, o_view, sample_count)
 		{