diff --git a/test/testsupport/perf_test.cc b/test/testsupport/perf_test.cc
index cf244df..bb4491a 100644
--- a/test/testsupport/perf_test.cc
+++ b/test/testsupport/perf_test.cc
@@ -85,16 +85,6 @@
                    units, important);
 }
 
-void PrintResultMeanAndError(const std::string& measurement,
-                             const std::string& modifier,
-                             const std::string& trace,
-                             const std::string& mean_and_error,
-                             const std::string& units,
-                             bool important) {
-  PrintResultsImpl(measurement, modifier, trace, mean_and_error, "{", "}",
-                   units, important);
-}
-
 void PrintResultList(const std::string& measurement,
                      const std::string& modifier,
                      const std::string& trace,
diff --git a/test/testsupport/perf_test.h b/test/testsupport/perf_test.h
index 2c98b8e..02dd1f3 100644
--- a/test/testsupport/perf_test.h
+++ b/test/testsupport/perf_test.h
@@ -52,13 +52,6 @@
                              const std::string& units,
                              bool important);
 
-void PrintResultMeanAndError(const std::string& measurement,
-                             const std::string& modifier,
-                             const std::string& trace,
-                             const std::string& mean_and_error,
-                             const std::string& units,
-                             bool important);
-
 // Like PrintResult(), but prints an entire list of results. The |values|
 // will generally be a list of comma-separated numbers. A typical
 // post-processing step might produce plots of their mean and standard