diff --git a/COPYING b/COPYING
index 0b6cbf8..6168a39 120000
--- a/COPYING
+++ b/COPYING
@@ -1 +1 @@
-/usr/share/automake-1.10/COPYING
\ No newline at end of file
+/usr/share/automake-1.11/COPYING
\ No newline at end of file
diff --git a/INSTALL b/INSTALL
index 5bb6e7b..cbd1c80 120000
--- a/INSTALL
+++ b/INSTALL
@@ -1 +1 @@
-/usr/share/automake-1.10/INSTALL
\ No newline at end of file
+/usr/share/automake-1.11/INSTALL
\ No newline at end of file
diff --git a/src/openssl.hxx b/src/openssl.hxx
index f151fc1..74943fb 100644
--- a/src/openssl.hxx
+++ b/src/openssl.hxx
@@ -610,12 +610,10 @@ namespace openssl {
       }
       //! Check whether it's a CA certificate.
       bool isCa() {
-        static BASIC_CONSTRAINTS* bc(0);
-        if (!bc) {
-          int pos(X509_get_ext_by_NID(_x509, NID_basic_constraints, -1));
-          if (pos>=0)
-            bc = (BASIC_CONSTRAINTS*)X509V3_EXT_d2i(X509_get_ext(_x509, pos));
-        }
+        BASIC_CONSTRAINTS* bc(0);
+        int pos(X509_get_ext_by_NID(_x509, NID_basic_constraints, -1));
+        if (pos>=0)
+          bc = (BASIC_CONSTRAINTS*)X509V3_EXT_d2i(X509_get_ext(_x509, pos));
         return bc&&bc->ca;
       }
       //! Get organizational unit name.