diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index dbbd16099da5..09b586553002 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,8 @@
+2016-04-06  Eric Botcazou  <ebotcazou@adacore.com>
+
+	* src/Makefile.am (libstdc++-symbols.ver): Remove useless /dev/null.
+	* src/Makefile.in: Regenerate.
+
 2016-02-24  Jonathan Wakely  <jwakely@redhat.com>
 
 	PR libstdc++/69939
diff --git a/libstdc++-v3/src/Makefile.am b/libstdc++-v3/src/Makefile.am
index a5f48b22c6db..fb0ec9a23c60 100644
--- a/libstdc++-v3/src/Makefile.am
+++ b/libstdc++-v3/src/Makefile.am
@@ -227,7 +227,7 @@ libstdc++-symbols.ver:  ${glibcxx_srcdir}/$(SYMVER_FILE) \
 	chmod +w $@.tmp
 	if test "x$(port_specific_symbol_files)" != x; then \
 	  if grep '^# Appended to version file.' \
-	       $(port_specific_symbol_files) /dev/null > /dev/null 2>&1; then \
+	       $(port_specific_symbol_files) > /dev/null 2>&1; then \
 	    cat $(port_specific_symbol_files) >> $@.tmp; \
 	  else \
 	    sed -n '1,/DO NOT DELETE/p' $@.tmp > tmp.top; \
diff --git a/libstdc++-v3/src/Makefile.in b/libstdc++-v3/src/Makefile.in
index 176879194b20..5221a5d5c298 100644
--- a/libstdc++-v3/src/Makefile.in
+++ b/libstdc++-v3/src/Makefile.in
@@ -938,7 +938,7 @@ compatibility-condvar.o: compatibility-condvar.cc
 @ENABLE_SYMVERS_TRUE@	chmod +w $@.tmp
 @ENABLE_SYMVERS_TRUE@	if test "x$(port_specific_symbol_files)" != x; then \
 @ENABLE_SYMVERS_TRUE@	  if grep '^# Appended to version file.' \
-@ENABLE_SYMVERS_TRUE@	       $(port_specific_symbol_files) /dev/null > /dev/null 2>&1; then \
+@ENABLE_SYMVERS_TRUE@	       $(port_specific_symbol_files) > /dev/null 2>&1; then \
 @ENABLE_SYMVERS_TRUE@	    cat $(port_specific_symbol_files) >> $@.tmp; \
 @ENABLE_SYMVERS_TRUE@	  else \
 @ENABLE_SYMVERS_TRUE@	    sed -n '1,/DO NOT DELETE/p' $@.tmp > tmp.top; \