diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index db89cd7f239..95681788c98 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,7 @@
+2004-02-05  Loren J. Rittle  <ljrittle@acm.org>
+
+	* scripts/check_performance: Support PCH.
+
 2004-02-05  Geoffrey Keating  <geoffk@apple.com>
 
 	PR 12179
diff --git a/libstdc++-v3/scripts/check_performance b/libstdc++-v3/scripts/check_performance
index cbfabb0a032..998f45d36f8 100755
--- a/libstdc++-v3/scripts/check_performance
+++ b/libstdc++-v3/scripts/check_performance
@@ -23,7 +23,7 @@ case $BASH_VERSION in
 esac
 
 flags_script=$BUILD_DIR/scripts/testsuite_flags
-INCLUDES=`$flags_script --build-includes`
+INCLUDES="`$flags_script --build-includes` -include bits/stdc++.h"
 FLAGS=`$flags_script --cxxflags`
 THREAD_FLAG='-pthread'
 COMPILER=`$flags_script --build-cxx`