diff --git a/config.m4 b/config.m4
index 62d27c0..4e851a2 100644
--- a/config.m4
+++ b/config.m4
@@ -150,6 +150,13 @@ if test "$PHP_PDO_OCI" != "no"; then
   PHP_ADD_LIBRARY(clntsh, 1, PDO_OCI_SHARED_LIBADD)
   PHP_ADD_LIBPATH($PDO_OCI_LIB_DIR, PDO_OCI_SHARED_LIBADD)
 
+  PHP_CHECK_LIBRARY(clntsh, OCIEnvNlsCreate,
+  [
+    AC_DEFINE(HAVE_OCIENVNLSCREATE,1,[ ])
+  ], [], [
+    -L$PDO_OCI_LIB_DIR $PDO_OCI_SHARED_LIBADD
+  ])
+
   PHP_CHECK_PDO_INCLUDES
 
   PHP_NEW_EXTENSION(pdo_oci, pdo_oci.c oci_driver.c oci_statement.c, $ext_shared,,-I$pdo_cv_inc_path)
diff --git a/oci_driver.c b/oci_driver.c
index 7940c09..3026f7c 100644
--- a/oci_driver.c
+++ b/oci_driver.c
@@ -742,6 +742,7 @@ static int pdo_oci_handle_factory(pdo_dbh_t *dbh, zval *driver_options) /* {{{ *
 	H->prefetch = PDO_OCI_PREFETCH_DEFAULT;
 
 	/* allocate an environment */
+#ifdef HAVE_OCIENVNLSCREATE
 	if (vars[0].optval) {
 		H->charset = OCINlsCharSetNameToId(pdo_oci_Env, (const oratext *)vars[0].optval);
 		if (!H->charset) {
@@ -754,7 +755,7 @@ static int pdo_oci_handle_factory(pdo_dbh_t *dbh, zval *driver_options) /* {{{ *
 			}
 		}
 	}
-
+#endif
 	if (H->env == NULL) {
 		/* use the global environment */
 		H->env = pdo_oci_Env;