diff --git a/src/research.h b/src/research.h
index 47c726e..28387bd 100644
--- a/src/research.h
+++ b/src/research.h
@@ -1,6 +1,7 @@
 #ifndef RESEARCH_H
 #define RESEARCH_H
 
-int research (void);		// cluster detection
+int research (void);		// detect clusters
+int eliminate_c (void);		// eliminate clusters
 
 #endif