diff --git a/sc2/src/libs/heap/heap.c b/sc2/src/libs/heap/heap.c
index 515fc37a3..1f4c0f71b 100644
--- a/sc2/src/libs/heap/heap.c
+++ b/sc2/src/libs/heap/heap.c
@@ -49,7 +49,7 @@ Heap_new(HeapValue_Comparator comparator, size_t initialSize, size_t minSize,
 	heap->minSize = minSize;
 	heap->minFillQuotient = minFillQuotient;
 	heap->size = nextPower2(initialSize);
-	heap->minFill = (size_t) ceil(((double) (heap->size >> 1))
+	heap->minFill = ceil(((double) (heap->size >> 1))
 			* heap->minFillQuotient);
 	heap->entries = malloc(heap->size * sizeof (HeapValue *));
 	heap->numEntries = 0;
diff --git a/sc2/src/libs/uio/hashtable.c b/sc2/src/libs/uio/hashtable.c
index 4e8907e48..1f376e154 100644
--- a/sc2/src/libs/uio/hashtable.c
+++ b/sc2/src/libs/uio/hashtable.c
@@ -169,12 +169,12 @@ static void
 HASHTABLE_(setup)(HASHTABLE_(HashTable) *hashTable, uio_uint32 initialSize) {
 	if (initialSize < 4)
 		initialSize = 4;
-	hashTable->size = nextPower2((uio_uint32) ceil(
-				((double) initialSize) / hashTable->maxFillQuotient));
+	hashTable->size = nextPower2(ceil(((double) initialSize) /
+			hashTable->maxFillQuotient));
 	hashTable->hashMask = hashTable->size - 1;
-	hashTable->minSize = (uio_uint32) ceil(((double) (hashTable->size >> 1))
+	hashTable->minSize = ceil(((double) (hashTable->size >> 1))
 			* hashTable->minFillQuotient);
-	hashTable->maxSize = (uio_uint32) floor(((double) hashTable->size)
+	hashTable->maxSize = floor(((double) hashTable->size)
 			* hashTable->maxFillQuotient);
 	hashTable->entries = uio_calloc(hashTable->size,
 			sizeof (HASHTABLE_(HashEntry) *));