diff --git a/ProcessList.c b/ProcessList.c
index e9bff680..160c05b4 100644
--- a/ProcessList.c
+++ b/ProcessList.c
@@ -273,7 +273,7 @@ void ProcessList_rebuildPanel(ProcessList* this) {
       if ( (!p->show)
          || (this->userId != (uid_t) -1 && (p->st_uid != this->userId))
          || (incFilter && !(String_contains_i(p->comm, incFilter)))
-         || (this->pidWhiteList && !Hashtable_get(this->pidWhiteList, p->pid)) )
+         || (this->pidWhiteList && !Hashtable_get(this->pidWhiteList, p->tgid)) )
          hidden = true;
 
       if (!hidden) {