diff --git a/src/util.cpp b/src/util.cpp
index df0520c5e..14e0e7530 100644
--- a/src/util.cpp
+++ b/src/util.cpp
@@ -267,61 +267,6 @@ int flock (int fd, int operation)
 }
 #endif
 
-////////////////////////////////////////////////////////////////////////////////
-// The vector must be sorted first.  This is a modified version of the run-
-// length encoding algorithm.
-//
-// This function converts the vector:
-//
-//   [1, 3, 4, 6, 7, 8, 9, 11]
-//
-// to ths string:
-//
-//   1,3-4,6-9,11
-//
-std::string compressIds (const std::vector <int>& ids)
-{
-  std::stringstream result;
-
-  int range_start = 0;
-  int range_end = 0;
-
-  for (unsigned int i = 0; i < ids.size (); ++i)
-  {
-    if (i + 1 == ids.size ())
-    {
-      if (result.str ().length ())
-        result << ",";
-
-      if (range_start < range_end)
-        result << ids[range_start] << "-" << ids[range_end];
-      else
-        result << ids[range_start];
-    }
-    else
-    {
-      if (ids[range_end] + 1 == ids[i + 1])
-      {
-        ++range_end;
-      }
-      else
-      {
-        if (result.str ().length ())
-          result << ",";
-
-        if (range_start < range_end)
-          result << ids[range_start] << "-" << ids[range_end];
-        else
-          result << ids[range_start];
-
-        range_start = range_end = i + 1;
-      }
-    }
-  }
-
-  return result.str ();
-}
-
 ////////////////////////////////////////////////////////////////////////////////
 void combine (std::vector <int>& dest, const std::vector <int>& source)
 {
diff --git a/src/util.h b/src/util.h
index 67600c790..406ec0fb1 100644
--- a/src/util.h
+++ b/src/util.h
@@ -61,7 +61,6 @@ int execute (const std::string&, const std::vector <std::string>&, const std::st
   int flock (int, int);
 #endif
 
-std::string compressIds (const std::vector <int>&);
 void combine (std::vector <int>&, const std::vector <int>&);
 
 unsigned burndown_size (unsigned ntasks);