diff --git a/libstdc++-v3/scripts/check_performance b/libstdc++-v3/scripts/check_performance
index 3fa927480c9e..cde3874741c4 100755
--- a/libstdc++-v3/scripts/check_performance
+++ b/libstdc++-v3/scripts/check_performance
@@ -32,7 +32,7 @@ SH_FLAG="-Wl,--rpath -Wl,$BUILD_DIR/../../gcc \
          -Wl,--rpath -Wl,$BUILD_DIR/src/.libs"
 ST_FLAG="-static"
 LINK=$SH_FLAG
-CXX="$COMPILER $INCLUDES $FLAGS -std=gnu++0x $CXXFLAGS $LINK"
+CXX="$COMPILER $INCLUDES $FLAGS -std=gnu++11 $CXXFLAGS $LINK"
 LIBS="./libtestc++.a"
 TESTS_FILE="testsuite_files_performance"
 
diff --git a/libstdc++-v3/testsuite/Makefile.am b/libstdc++-v3/testsuite/Makefile.am
index 9cef1e65e1b9..2fca179fca4f 100644
--- a/libstdc++-v3/testsuite/Makefile.am
+++ b/libstdc++-v3/testsuite/Makefile.am
@@ -182,6 +182,7 @@ check-compile: testsuite_files ${compile_script}
 check_performance_script=${glibcxx_srcdir}/scripts/check_performance
 check-performance: testsuite_files_performance ${performance_script}
 	-@(chmod + ${check_performance_script}; \
+	  export CXXFLAGS="$(CXXFLAGS)"; \
 	  ${check_performance_script} ${glibcxx_srcdir} ${glibcxx_builddir})
 
 # Runs the testsuite in debug mode.
diff --git a/libstdc++-v3/testsuite/Makefile.in b/libstdc++-v3/testsuite/Makefile.in
index 7be29e59a091..4e829d0e80fe 100644
--- a/libstdc++-v3/testsuite/Makefile.in
+++ b/libstdc++-v3/testsuite/Makefile.in
@@ -703,6 +703,7 @@ check-compile: testsuite_files ${compile_script}
 	  ${compile_script} ${glibcxx_srcdir} ${glibcxx_builddir})
 check-performance: testsuite_files_performance ${performance_script}
 	-@(chmod + ${check_performance_script}; \
+	  export CXXFLAGS="$(CXXFLAGS)"; \
 	  ${check_performance_script} ${glibcxx_srcdir} ${glibcxx_builddir})
 
 check-debug: site.exp