Index: b/src/global.c
===================================================================
--- b/src/global.c
+++ b/src/global.c
@@ -671,6 +671,15 @@
       rc = GPG_ERR_NOT_IMPLEMENTED;
       break;
 
+    case GCRYCTL_DRBG_REINIT:
+      {
+        u_int32_t flags = va_arg (arg_ptr, u_int32_t);
+        struct drbg_string *pers = va_arg (arg_ptr, struct drbg_string *);
+	struct drbg_test_data *test_data = va_arg (arg_ptr, struct drbg_test_data *);
+        rc = _gcry_drbg_reinit(flags, pers, test_data);
+      }
+      break;
+
     default:
       _gcry_set_preferred_rng_type (0);
       rc = GPG_ERR_INV_OP;