diff --git a/core/utils/pqueue_tag.c b/core/utils/pqueue_tag.c
index 872eaa0cf..62639cd72 100644
--- a/core/utils/pqueue_tag.c
+++ b/core/utils/pqueue_tag.c
@@ -24,7 +24,10 @@
  * element is also the priority. This function is of type pqueue_get_pri_f.
  * @param element A pointer to a pqueue_tag_element_t, cast to void*.
  */
-static pqueue_pri_t pqueue_tag_get_priority(void* element) { return (pqueue_pri_t)(uintptr_t)element; }
+static pqueue_pri_t pqueue_tag_get_priority(void* element) {
+  // Suppress "error: cast from pointer to integer of different size" by casting to uintptr_t first.
+  return (pqueue_pri_t)(uintptr_t)element;
+}
 
 /**
  * @brief Callback function to determine whether two elements are equivalent.
@@ -66,7 +69,9 @@ static void pqueue_tag_print_element(void* element) {
 // Functions defined in pqueue_tag.h.
 
 int pqueue_tag_compare(pqueue_pri_t priority1, pqueue_pri_t priority2) {
-  return (lf_tag_compare(((pqueue_tag_element_t*)(uintptr_t)priority1)->tag, ((pqueue_tag_element_t*)(uintptr_t)priority2)->tag));
+  // Suppress "error: cast from pointer to integer of different size" by casting to uintptr_t first.
+  return (lf_tag_compare(((pqueue_tag_element_t*)(uintptr_t)priority1)->tag,
+                         ((pqueue_tag_element_t*)(uintptr_t)priority2)->tag));
 }
 
 pqueue_tag_t* pqueue_tag_init(size_t initial_size) {
diff --git a/include/core/utils/pqueue_base.h b/include/core/utils/pqueue_base.h
index b913ab64f..4b76fab0e 100644
--- a/include/core/utils/pqueue_base.h
+++ b/include/core/utils/pqueue_base.h
@@ -122,14 +122,6 @@ size_t pqueue_size(pqueue_t* q);
  */
 int pqueue_insert(pqueue_t* q, void* d);
 
-/**
- * Move an existing entry to a different priority.
- * @param q the queue
- * @param new_pri the new priority
- * @param d the entry
- */
-void pqueue_change_priority(pqueue_t* q, pqueue_pri_t new_pri, void* d);
-
 /**
  * Pop the highest-ranking item from the queue.
  * @param q the queue