diff --git a/lib/system/mm/malloc.nim b/lib/system/mm/malloc.nim
index 883baaeb47..3dad98e93a 100644
--- a/lib/system/mm/malloc.nim
+++ b/lib/system/mm/malloc.nim
@@ -7,13 +7,13 @@ proc allocImpl(size: Natural): pointer =
 proc alloc0Impl(size: Natural): pointer =
   c_calloc(size.csize_t, 1)
 
-proc reallocImpl(p: pointer, newsize: Natural): pointer =
+proc reallocImpl(p: pointer, newSize: Natural): pointer =
   c_realloc(p, newSize.csize_t)
 
-proc realloc0Impl(p: pointer, oldsize, newsize: Natural): pointer =
-  result = realloc(p, newsize.csize_t)
-  if newsize > oldsize:
-    zeroMem(cast[pointer](cast[int](result) + oldsize), newsize - oldsize)
+proc realloc0Impl(p: pointer, oldsize, newSize: Natural): pointer =
+  result = realloc(p, newSize.csize_t)
+  if newSize > oldSize:
+    zeroMem(cast[pointer](cast[int](result) + oldSize), newSize - oldSize)
 
 proc deallocImpl(p: pointer) =
   c_free(p)
@@ -27,11 +27,11 @@ proc allocSharedImpl(size: Natural): pointer =
 proc allocShared0Impl(size: Natural): pointer =
   alloc0Impl(size)
 
-proc reallocSharedImpl(p: pointer, newsize: Natural): pointer =
-  reallocImpl(p, newsize)
+proc reallocSharedImpl(p: pointer, newSize: Natural): pointer =
+  reallocImpl(p, newSize)
 
-proc reallocShared0Impl(p: pointer, oldsize, newsize: Natural): pointer =
-  realloc0Impl(p, oldsize, newsize)
+proc reallocShared0Impl(p: pointer, oldsize, newSize: Natural): pointer =
+  realloc0Impl(p, oldSize, newSize)
 
 proc deallocSharedImpl(p: pointer) = deallocImpl(p)