diff --git a/ssl/ssldecode.c b/ssl/ssldecode.c
index db0d32c..e373396 100644
--- a/ssl/ssldecode.c
+++ b/ssl/ssldecode.c
@@ -259,9 +259,10 @@ int ssl_set_client_session_id(d,msg,len)
   {
 #ifdef OPENSSL    
     int r;
-    
-    if(r=r_data_create(&d->session_id,msg,len))
-      ERETURN(r);
+
+    if(len>0)
+        if(r=r_data_create(&d->session_id,msg,len))
+            ERETURN(r);
 #endif
     return(0);
   }