diff --git a/minimal_heap.h b/minimal_heap.h
index a3510e0..40a17f9 100644
--- a/minimal_heap.h
+++ b/minimal_heap.h
@@ -132,7 +132,7 @@ bool MIHP_DestroyHeapMemoryArea(MIHP_Heap* heap, MIHP_HeapMemoryAreaHeader* area
 MIHP_HeapSegmentHeader* MIHP_InitializeHeapSegment(MIHP_HeapMemoryAreaHeader* area, void* segmentStart, size_t size);
 bool MIHP_UninitializeHeapSegment(MIHP_HeapSegmentHeader* segment);
 
-bool MIHP_SplitHeapSegment(MIHP_HeapSegmentHeader* sourceSegment, size_t newSegmentSize, MIHP_HeapSegmentHeader** optOutNewSegment);
+bool MIHP_SplitHeapSegment(MIHP_HeapSegmentHeader* sourceSegment, size_t newSegmentSize, MIHP_HeapSegmentHeader** outNewSegment);
 bool MIHP_MergeHeapSegments(MIHP_HeapSegmentHeader* sourceSegment, MIHP_HeapSegmentHeader* segmentToAbsorb);
 
 size_t MIHP_GetHeapAlignedSize(const MIHP_Heap* heap, size_t size);
diff --git a/minimal_heap_implementation.inl b/minimal_heap_implementation.inl
index 954ba3f..9d25b12 100644
--- a/minimal_heap_implementation.inl
+++ b/minimal_heap_implementation.inl
@@ -471,7 +471,7 @@ bool MIHP_UninitializeHeapSegment(MIHP_HeapSegmentHeader* segment)
 	return true;
 }
 
-bool MIHP_SplitHeapSegment(MIHP_HeapSegmentHeader* sourceSegment, size_t newSegmentMinSize, MIHP_HeapSegmentHeader** optOutNewSegment)
+bool MIHP_SplitHeapSegment(MIHP_HeapSegmentHeader* sourceSegment, size_t newSegmentMinSize, MIHP_HeapSegmentHeader** outNewSegment)
 {
 	MIHP_ASSERT(sourceSegment);