#11515: fix several typos. Patch by Piotr Kasprzyk.
diff --git a/Python/_warnings.c b/Python/_warnings.c
index 1dc2512..88be7db 100644
--- a/Python/_warnings.c
+++ b/Python/_warnings.c
@@ -725,7 +725,7 @@
     return 0;
 }
 
-/* PyErr_Warn is only for backwards compatability and will be removed.
+/* PyErr_Warn is only for backwards compatibility and will be removed.
    Use PyErr_WarnEx instead. */
 
 #undef PyErr_Warn
diff --git a/Python/sysmodule.c b/Python/sysmodule.c
index 56e70e6..eeb18f3 100644
--- a/Python/sysmodule.c
+++ b/Python/sysmodule.c
@@ -560,7 +560,7 @@
 Return information about the running version of Windows as a named tuple.\n\
 The members are named: major, minor, build, platform, service_pack,\n\
 service_pack_major, service_pack_minor, suite_mask, and product_type. For\n\
-backward compatibiliy, only the first 5 items are available by indexing.\n\
+backward compatibility, only the first 5 items are available by indexing.\n\
 All elements are numbers, except service_pack which is a string. Platform\n\
 may be 0 for win32s, 1 for Windows 9x/ME, 2 for Windows NT/2000/XP/Vista/7,\n\
 3 for Windows CE. Product_type may be 1 for a workstation, 2 for a domain\n\