diff --git a/src/libutil/heap.c b/src/libutil/heap.c
index 2744ebce..0522b2ea 100644
--- a/src/libutil/heap.c
+++ b/src/libutil/heap.c
@@ -62,13 +62,13 @@ typedef union _tagAlignmentStruct_t
 /* fragment.                                                         */
 typedef struct _tagHeapInfo_t
 {
-  //! Size of the preceding segment, measured in units of ALIGNMENT_SIZE, including the size of this beginer
+  //! Size of the preceding segment, measured in units of ALIGNMENT_SIZE, including the size of this header
   uint16_t PrevSize;
 
   //! Whether or not this block is currently allocated (vs being free).
   bool is_allocated:1;
 
-  //! Size of this segment, measured in units of ALIGNMENT_SIZE, including this size of this beginer
+  //! Size of this segment, measured in units of ALIGNMENT_SIZE, including this size of this header
   uint16_t Size:15;
 
 #ifdef MALLOC_INSTRUMENTATION
@@ -81,10 +81,10 @@ typedef struct _tagHeapInfo_t
 } HeapInfo_t;
 
 
-//! The size of a block in units of Alignment_t, including the beginer and including _x words of data.
+//! The size of a block in units of Alignment_t, including the header and including _x words of data.
 #define HEAP_INFO_BLOCK_SIZE(_x) ((offsetof(HeapInfo_t, Data) / ALIGNMENT_SIZE) + (_x))
 
-//! Convert a pointer to the Data member to a pointer to the HeapInfo_t beginer
+//! Convert a pointer to the Data member to a pointer to the HeapInfo_t header
 #define HEAP_INFO_FOR_PTR(ptr) (HeapInfo_t *)(((Alignment_t *)ptr) - HEAP_INFO_BLOCK_SIZE(0))
 
 _Static_assert((offsetof(HeapInfo_t, Data) % ALIGNMENT_SIZE) == 0, "Heap not properly aligned.");
@@ -241,7 +241,7 @@ void *heap_malloc(Heap* const heap, unsigned long nbytes, uintptr_t client_pc) {
   /* size.                                                             */
   unsigned long allocation_size = (nbytes + (ALIGNMENT_SIZE - 1)) / ALIGNMENT_SIZE;
 
-  /* Add the beginer size to the requested size.                        */
+  /* Add the header size to the requested size.                        */
   allocation_size += HEAP_INFO_BLOCK_SIZE(0);
 
   /* Verify that the requested size is valid                           */
@@ -336,7 +336,7 @@ void heap_free(Heap* const heap, void *ptr, uintptr_t client_pc) {
 
       /* Check to see if the previous segment can be combined. */
       if(!previous_block->is_allocated) {
-        /* Add the segment to be freed to the new beginer.     */
+        /* Add the segment to be freed to the new header.     */
         previous_block->Size += heap_info_ptr->Size;
 
         /* Set the pointer to the beginning of the previous   */
@@ -470,7 +470,7 @@ static HeapInfo_t *find_segment(Heap* const heap, unsigned long n_units) {
 //! Split a block into two smaller blocks, returning a pointer to the new second block.
 //! The first block will be available at the same location as before, but with a smaller size.
 //! Assumes the block is big enough to be split and is unallocated.
-//! @param first_part_size the size of the new block, in ALIGNMENT_SIZE units, including the beginer
+//! @param first_part_size the size of the new block, in ALIGNMENT_SIZE units, including the header
 static HeapInfo_t* split_block(Heap *heap, HeapInfo_t* block, size_t first_part_size) {
   HeapInfo_t* second_block = (HeapInfo_t*) (((Alignment_t*) block) + first_part_size);
 
@@ -495,7 +495,7 @@ static HeapInfo_t* split_block(Heap *heap, HeapInfo_t* block, size_t first_part_
 }
 
 //! Allocated the block in the given HeapInfo_t segment.
-//!     @param n_units number of ALIGNMENT_SIZE units this segment requires (including space for the beginer).
+//!     @param n_units number of ALIGNMENT_SIZE units this segment requires (including space for the header).
 //!     @param heap_info_ptr the segment where the block should be allocated.
 static HeapInfo_t *allocate_block(Heap* const heap, unsigned long n_units, HeapInfo_t* heap_info_ptr) {
   // Make sure we can use all or part of this block for this allocation.
diff --git a/src/libutil/includes/util/heap.h b/src/libutil/includes/util/heap.h
index 1127142a..b2183c1e 100644
--- a/src/libutil/includes/util/heap.h
+++ b/src/libutil/includes/util/heap.h
@@ -43,9 +43,9 @@ typedef struct Heap {
   HeapInfo_t *begin;
   HeapInfo_t *end;
 
-  //! Number of allocated bytes, including beginers
+  //! Number of allocated bytes, including headers
   unsigned int current_size;
-  //! Peak number of allocated bytes, including beginers
+  //! Peak number of allocated bytes, including headers
   unsigned int high_water_mark;
 
   HeapLockImpl lock_impl;