diff --git a/libstdc++-v3/configure b/libstdc++-v3/configure
index d7a4826b8e2..e6f30a1a706 100755
--- a/libstdc++-v3/configure
+++ b/libstdc++-v3/configure
@@ -5899,7 +5899,7 @@ $as_echo "$as_me: OS config directory is $os_include_dir" >&6;}
 
 
 # Libtool setup.
-if test "x${with_newlib}" != "xyes"; then
+if test "x${with_newlib}" != "xyes" && test "x${with_avrlibc}" != "xyes"; then
   enable_dlopen=yes
 
 
diff --git a/libstdc++-v3/configure.ac b/libstdc++-v3/configure.ac
index cbfdf4c6bad..771814110a1 100644
--- a/libstdc++-v3/configure.ac
+++ b/libstdc++-v3/configure.ac
@@ -90,7 +90,7 @@ AC_SYS_LARGEFILE
 GLIBCXX_CONFIGURE
 
 # Libtool setup.
-if test "x${with_newlib}" != "xyes"; then
+if test "x${with_newlib}" != "xyes" && test "x${with_avrlibc}" != "xyes"; then
   AC_LIBTOOL_DLOPEN
 fi
 AM_PROG_LIBTOOL