diff --git a/Objects/bytearrayobject.c b/Objects/bytearrayobject.c
index 8609395..6c64b57 100644
--- a/Objects/bytearrayobject.c
+++ b/Objects/bytearrayobject.c
@@ -2291,7 +2291,7 @@
     if (it == NULL)
         return NULL;
 
-    /* Try to determine the length of the argument. 32 is abitrary. */
+    /* Try to determine the length of the argument. 32 is arbitrary. */
     buf_size = _PyObject_LengthHint(arg, 32);
     if (buf_size == -1) {
         Py_DECREF(it);
diff --git a/Objects/longobject.c b/Objects/longobject.c
index fbd18a2..05d44b3 100644
--- a/Objects/longobject.c
+++ b/Objects/longobject.c
@@ -2895,7 +2895,7 @@
  * of slices, each with a->ob_size digits, and multiply the slices by a,
  * one at a time.  This gives k_mul balanced inputs to work with, and is
  * also cache-friendly (we compute one double-width slice of the result
- * at a time, then move on, never bactracking except for the helpful
+ * at a time, then move on, never backtracking except for the helpful
  * single-width slice overlap between successive partial sums).
  */
 static PyLongObject *
diff --git a/Objects/stringlib/string_format.h b/Objects/stringlib/string_format.h
index e7bf724..075fa1d 100644
--- a/Objects/stringlib/string_format.h
+++ b/Objects/stringlib/string_format.h
@@ -6,7 +6,7 @@
 */
 
 
-/* Defines for Python 2.6 compatability */
+/* Defines for Python 2.6 compatibility */
 #if PY_VERSION_HEX < 0x03000000
 #define PyLong_FromSsize_t _PyLong_FromSsize_t
 #endif
diff --git a/Objects/stringobject.c b/Objects/stringobject.c
index 6d3ca8e..0a7e78d 100644
--- a/Objects/stringobject.c
+++ b/Objects/stringobject.c
@@ -744,7 +744,7 @@
         default:
             *p++ = '\\';
             s--;
-            goto non_esc; /* an arbitry number of unescaped
+            goto non_esc; /* an arbitrary number of unescaped
                              UTF-8 bytes may follow. */
         }
     }