diff --git a/doc/source/whatsnew.rst b/doc/source/whatsnew.rst
index 85546e07..bfe8f907 100644
--- a/doc/source/whatsnew.rst
+++ b/doc/source/whatsnew.rst
@@ -780,7 +780,7 @@ v1.3.1
 
 * Some parsing details, notably ``volatile`` is passed along like
   ``const`` and ``restrict``.  Also, older versions of pycparser
-  mis-parse some pointer-to-pointer types like ``char * const *``: the
+  misparse some pointer-to-pointer types like ``char * const *``: the
   "const" ends up at the wrong place.  Added a workaround.
 
 
diff --git a/src/c/malloc_closure.h b/src/c/malloc_closure.h
index f51a70c6..d39b9327 100644
--- a/src/c/malloc_closure.h
+++ b/src/c/malloc_closure.h
@@ -77,17 +77,17 @@ static Py_ssize_t allocate_num_pages = 0;
 
 /******************************************************************/
 
-union mmaped_block {
+union mmapped_block {
     ffi_closure closure;
-    union mmaped_block *next;
+    union mmapped_block *next;
 };
 
-static union mmaped_block *free_list = 0;
+static union mmapped_block *free_list = 0;
 static Py_ssize_t _pagesize = 0;
 
 static void more_core(void)
 {
-    union mmaped_block *item;
+    union mmapped_block *item;
     Py_ssize_t count, i;
 
 /* determine the pagesize */
@@ -113,13 +113,13 @@ static void more_core(void)
     allocate_num_pages = 1 + (
         (Py_ssize_t)(allocate_num_pages * PAGE_ALLOCATION_GROWTH_RATE));
 
-    /* calculate the number of mmaped_blocks to allocate */
-    count = (allocate_num_pages * _pagesize) / sizeof(union mmaped_block);
+    /* calculate the number of mmapped_blocks to allocate */
+    count = (allocate_num_pages * _pagesize) / sizeof(union mmapped_block);
 
     /* allocate a memory block */
 #ifdef MS_WIN32
-    item = (union mmaped_block *)VirtualAlloc(NULL,
-                                           count * sizeof(union mmaped_block),
+    item = (union mmapped_block *)VirtualAlloc(NULL,
+                                           count * sizeof(union mmapped_block),
                                            MEM_COMMIT,
                                            PAGE_EXECUTE_READWRITE);
     if (item == NULL)
@@ -129,7 +129,7 @@ static void more_core(void)
     int prot = PROT_READ | PROT_WRITE | PROT_EXEC;
     if (is_emutramp_enabled ())
         prot &= ~PROT_EXEC;
-    item = (union mmaped_block *)mmap(NULL,
+    item = (union mmapped_block *)mmap(NULL,
                         allocate_num_pages * _pagesize,
                         prot,
                         MAP_PRIVATE | MAP_ANONYMOUS,
@@ -141,7 +141,7 @@ static void more_core(void)
 #endif
 
 #ifdef MALLOC_CLOSURE_DEBUG
-    printf("block at %p allocated (%ld bytes), %ld mmaped_blocks\n",
+    printf("block at %p allocated (%ld bytes), %ld mmapped_blocks\n",
            item, (long)(allocate_num_pages * _pagesize), (long)count);
 #endif
     /* put them into the free list */
@@ -167,7 +167,7 @@ static PyMutex malloc_closure_lock;
 static void cffi_closure_free(ffi_closure *p)
 {
     MALLOC_CLOSURE_LOCK();
-    union mmaped_block *item = (union mmaped_block *)p;
+    union mmapped_block *item = (union mmapped_block *)p;
     item->next = free_list;
     free_list = item;
     MALLOC_CLOSURE_UNLOCK();
@@ -176,7 +176,7 @@ static void cffi_closure_free(ffi_closure *p)
 /* return one item from the free list, allocating more if needed */
 static ffi_closure *cffi_closure_alloc(void)
 {
-    union mmaped_block *item;
+    union mmapped_block *item;
     MALLOC_CLOSURE_LOCK();
     if (!free_list)
         more_core();
diff --git a/src/c/test_c.py b/src/c/test_c.py
index b2ae3a47..c8a88c9f 100644
--- a/src/c/test_c.py
+++ b/src/c/test_c.py
@@ -2602,7 +2602,7 @@ def test_cast_invalid():
     s = p[0]
     pytest.raises(TypeError, cast, BStruct, s)
 
-def test_bug_float_convertion():
+def test_bug_float_conversion():
     BDouble = new_primitive_type("double")
     BDoubleP = new_pointer_type(BDouble)
     pytest.raises(TypeError, newp, BDoubleP, "foobar")
diff --git a/testing/cffi0/test_version.py b/testing/cffi0/test_version.py
index ad952342..b1e1293c 100644
--- a/testing/cffi0/test_version.py
+++ b/testing/cffi0/test_version.py
@@ -62,5 +62,5 @@ def test_embedding_h():
     loc = content.find('cffi version: ')
     assert loc > 0, "Cannot find cffi version string in _embedding.h"
     context = content[loc-100:loc+100]
-    msg = f"CFFI verison is incorrect, context for current version string is:\n{context}"
+    msg = f"CFFI version is incorrect, context for current version string is:\n{context}"
     assert (f'cffi version: {v}"') in context, msg
diff --git a/testing/cffi1/test_re_python.py b/testing/cffi1/test_re_python.py
index fbca325e..5f1f85ab 100644
--- a/testing/cffi1/test_re_python.py
+++ b/testing/cffi1/test_re_python.py
@@ -318,7 +318,7 @@ def test_rec_structs_1():
     #
     from _rec_structs_1 import ffi
     # the following line used to raise TypeError
-    # unless preceeded by 'ffi.sizeof("struct C")'.
+    # unless preceded by 'ffi.sizeof("struct C")'.
     sz = ffi.sizeof("struct B")
     assert sz == ffi.sizeof("int *")