diff --git a/src/commons/ProdigalWrapper.h b/src/commons/ProdigalWrapper.h
index 8570d1c4..7d50ddd7 100644
--- a/src/commons/ProdigalWrapper.h
+++ b/src/commons/ProdigalWrapper.h
@@ -43,6 +43,11 @@ class ProdigalWrapper{
     mask mlist[MAX_MASKS];
     struct _metagenomic_bin * meta;
 
+    /* Set a bit to 1 */
+    void set(unsigned char *bm, int ndx) {
+        bm[ndx>>3] |= (1 << (ndx&0x07));
+    }
+
 public:
     int fng, ng;
     int is_meta;