diff --git a/src/planner.c b/src/planner.c
index 81046a5..a069141 100644
--- a/src/planner.c
+++ b/src/planner.c
@@ -69,13 +69,24 @@ char *taskToStr(Task *t) {
 }
 
 // for llist
-int cmpTask(void *a, void *b) {
+
+// compare task by name
+int cmpTaskN(void *a, void *b) {
   Task *aa = (Task *)a;
   Task *bb = (Task *)b;
   return strcmp(aa->name, bb->name);
 }
+
+// compare task by priority
+int cmpTaskP(void *a, void *b) {
+  Task *aa = (Task *)a;
+  Task *bb = (Task *)b;
+  return aa->priority - bb->priority;
+}
+
+// cmp event by task name
 int cmpEvent(void *a, void *b) {
   Event *aa = (Event *)a;
   Event *bb = (Event *)b;
-  return cmpTask(aa->task, bb->task);
+  return cmpTaskN(aa->task, bb->task);
 }
diff --git a/src/planner.h b/src/planner.h
index c6aab1c..2f94461 100644
--- a/src/planner.h
+++ b/src/planner.h
@@ -29,7 +29,8 @@ Task *newTask(char *n, time_t c, time_t d, int p, uint64_t sp);
 /*
  * compare function for Task
  */
-int cmpTask(void *a, void *b);
+int cmpTaskN(void *a, void *b);
+int cmpTaskP(void *a, void *b);
 
 /*
  * return allocated string representation of Task
diff --git a/src/test.c b/src/test.c
index 305c7ca..9ac3dba 100644
--- a/src/test.c
+++ b/src/test.c
@@ -22,7 +22,7 @@ int main() {
   printf("%s\n", ctime(&now));
 
   // new llist test
-  llist *list1 = llistNew(t1, cmpTask);
+  llist *list1 = llistNew(t1, cmpTaskN);
   llistAppend(list1, &t2);
 
   // print test tasks