diff --git a/include/mimalloc-types.h b/include/mimalloc-types.h
index caf161d6..66b311c1 100644
--- a/include/mimalloc-types.h
+++ b/include/mimalloc-types.h
@@ -319,7 +319,7 @@ typedef struct mi_random_cxt_s {
 } mi_random_ctx_t;
 
 
-// In debug mode there is a padding stucture at the end of the blocks to check for buffer overflows
+// In debug mode there is a padding structure at the end of the blocks to check for buffer overflows
 #if (MI_PADDING)
 typedef struct mi_padding_s {
   uint32_t canary; // encoded block value to check validity of the padding (in case of overflow)
diff --git a/src/heap.c b/src/heap.c
index bda10699..bbf4cef9 100644
--- a/src/heap.c
+++ b/src/heap.c
@@ -333,7 +333,7 @@ void mi_heap_destroy(mi_heap_t* heap) {
   Safe Heap delete
 ----------------------------------------------------------- */
 
-// Tranfer the pages from one heap to the other
+// Transfer the pages from one heap to the other
 static void mi_heap_absorb(mi_heap_t* heap, mi_heap_t* from) {
   mi_assert_internal(heap!=NULL);
   if (from==NULL || from->page_count == 0) return;