diff --git a/ChangeLog b/ChangeLog
index 50f3d2d4..60426f4f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2010-07-05  Giuseppe Scrivano  <gscrivano@gnu.org>
+
+	* bootstrap.conf (gnulib_modules): Add `asprintf'.
+
 2010-06-22  Giuseppe Scrivano  <gscrivano@gnu.org>
 
 	* configure.ac: By default use GNU TLS not OpenSSL.
diff --git a/bootstrap.conf b/bootstrap.conf
index 36778f7c..1692f5c7 100644
--- a/bootstrap.conf
+++ b/bootstrap.conf
@@ -27,6 +27,7 @@ gnulib_modules="
 accept
 alloca
 announce-gen
+asprintf
 bind
 c-ctype
 close
diff --git a/src/ChangeLog b/src/ChangeLog
index a062fdfb..21261f49 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,8 @@
+2010-07-05  Giuseppe Scrivano  <gscrivano@gnu.org>
+
+	* gnutls.c (ssl_init): New local variables `ca_directory' and `dir'.
+	Load default root certificates under the `ca_directory' directory.
+
 2010-07-03  Giuseppe Scrivano  <gscrivano@gnu.org>
 
 	* gnutls.c (ssl_connect_wget): New local variable `allowed_protocols'.
diff --git a/src/gnutls.c b/src/gnutls.c
index 3c4c5b4c..adba8560 100644
--- a/src/gnutls.c
+++ b/src/gnutls.c
@@ -37,6 +37,7 @@ as that of the covered work.  */
 #endif
 #include <string.h>
 #include <stdio.h>
+#include <dirent.h>
 #include <stdlib.h>
 
 #include <gnutls/gnutls.h>
@@ -61,8 +62,42 @@ static gnutls_certificate_credentials credentials;
 bool
 ssl_init ()
 {
+  const char *ca_directory;
+  DIR *dir;
+
   gnutls_global_init ();
   gnutls_certificate_allocate_credentials (&credentials);
+
+  ca_directory = opt.ca_directory ? opt.ca_directory : "/etc/ssl/certs";
+
+  dir = opendir (ca_directory);
+  if (dir == NULL)
+    {
+      if (opt.ca_directory)
+        logprintf (LOG_NOTQUIET, _("ERROR: Cannot open directory %s.\n"),
+                   opt.ca_directory);
+    }
+  else
+    {
+      struct dirent *dent;
+      while ((dent = readdir (dir)) != NULL)
+        {
+          struct stat st;
+          char *ca_file;
+          asprintf (&ca_file, "%s/%s", ca_directory, dent->d_name);
+
+          stat (ca_file, &st);
+
+          if (S_ISREG (st.st_mode))
+            gnutls_certificate_set_x509_trust_file (credentials, ca_file,
+                                                    GNUTLS_X509_FMT_PEM);
+
+          free (ca_file);
+        }
+
+      closedir (dir);
+    }
+
   if (opt.ca_cert)
     gnutls_certificate_set_x509_trust_file (credentials, opt.ca_cert,
                                             GNUTLS_X509_FMT_PEM);