diff --git a/src/MC/fix_bond_break.cpp b/src/MC/fix_bond_break.cpp
index 4fe4943bcf..febe418c88 100755
--- a/src/MC/fix_bond_break.cpp
+++ b/src/MC/fix_bond_break.cpp
@@ -481,7 +481,7 @@ void FixBondBreak::update_topology()
   }
 
   for (i = 0; i < nlocal; i++)
-    if (influenced[i]) rebuild_special(i,id1,id2);
+    if (influenced[i]) rebuild_special(i);
 }
 
 /* ----------------------------------------------------------------------
@@ -613,7 +613,7 @@ void FixBondBreak::break_impropers(int m, tagint id1, tagint id2)
    may affect 1-3 and 1-4 bonds
 ------------------------------------------------------------------------- */
 
-void FixBondBreak::rebuild_special(int m, tagint id1, tagint id2)
+void FixBondBreak::rebuild_special(int m)
 {
   int i,j,n,n1,cn1,cn2,cn3;
   tagint *slist;
diff --git a/src/MC/fix_bond_break.h b/src/MC/fix_bond_break.h
index 0bfab493e5..e60afae6ae 100755
--- a/src/MC/fix_bond_break.h
+++ b/src/MC/fix_bond_break.h
@@ -70,7 +70,7 @@ class FixBondBreak : public Fix {
   void break_angles(int, tagint, tagint);
   void break_dihedrals(int, tagint, tagint);
   void break_impropers(int, tagint, tagint);
-  void rebuild_special(int, tagint, tagint);
+  void rebuild_special(int);
   int dedup(int, int, tagint *);
   
   // DEBUG