diff --git a/configure b/configure
index 529db79ae..71de0b051 100755
--- a/configure
+++ b/configure
@@ -7319,7 +7319,7 @@ cd libsodium-$sodium_version
 save_cflags="$CFLAGS"
 CFLAGS="$orig_cflags"
 export CFLAGS
-./configure --prefix=$cur_dir/extras/sodium --libdir=$PRIVATELIBDIR --enable-shared --disable-static || exit 1
+./configure --prefix=$cur_dir/extras/sodium --libdir=$PRIVATELIBDIR --enable-shared --disable-static --enable-opt || exit 1
 CFLAGS="$save_cflags"
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: compiling sodium resolver library" >&5
 $as_echo "compiling sodium resolver library" >&6; }
diff --git a/configure.ac b/configure.ac
index 8cab2859a..028495a6c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -654,7 +654,7 @@ cd libsodium-$sodium_version
 save_cflags="$CFLAGS"
 CFLAGS="$orig_cflags"
 export CFLAGS
-./configure --prefix=$cur_dir/extras/sodium --libdir=$PRIVATELIBDIR --enable-shared --disable-static || exit 1
+./configure --prefix=$cur_dir/extras/sodium --libdir=$PRIVATELIBDIR --enable-shared --disable-static --enable-opt || exit 1
 CFLAGS="$save_cflags"
 AC_MSG_RESULT(compiling sodium resolver library)
 $ac_cv_prog_MAKER || exit 1