diff --git a/Include/object.h b/Include/object.h
index 03f4796..c4a5cba 100644
--- a/Include/object.h
+++ b/Include/object.h
@@ -162,7 +162,9 @@
         /* Flags for getting buffers */
 #define PyBUF_SIMPLE 0
 #define PyBUF_CHARACTER 1
-#define PyBUF_WRITEABLE 0x0002
+#define PyBUF_WRITABLE 0x0002
+/*  we used to include an E, backwards compatible alias  */
+#define PyBUF_WRITEABLE PyBUF_WRITABLE
 #define PyBUF_LOCKDATA 0x0004
 #define PyBUF_FORMAT 0x0008
 #define PyBUF_ND 0x0010
@@ -172,19 +174,19 @@
 #define PyBUF_ANY_CONTIGUOUS (0x0100 | PyBUF_STRIDES)
 #define PyBUF_INDIRECT (0x0200 | PyBUF_STRIDES)
 
-#define PyBUF_CONTIG (PyBUF_ND | PyBUF_WRITEABLE)
+#define PyBUF_CONTIG (PyBUF_ND | PyBUF_WRITABLE)
 #define PyBUF_CONTIG_RO (PyBUF_ND)
 #define PyBUF_CONTIG_LCK (PyBUF_ND | PyBUF_LOCKDATA)
 
-#define PyBUF_STRIDED (PyBUF_STRIDES | PyBUF_WRITEABLE)
+#define PyBUF_STRIDED (PyBUF_STRIDES | PyBUF_WRITABLE)
 #define PyBUF_STRIDED_RO (PyBUF_STRIDES)
 #define PyBUF_STRIDED_LCK (PyBUF_STRIDES | PyBUF_LOCKDATA)
 
-#define PyBUF_RECORDS (PyBUF_STRIDES | PyBUF_WRITEABLE | PyBUF_FORMAT)
+#define PyBUF_RECORDS (PyBUF_STRIDES | PyBUF_WRITABLE | PyBUF_FORMAT)
 #define PyBUF_RECORDS_RO (PyBUF_STRIDES | PyBUF_FORMAT)
 #define PyBUF_RECORDS_LCK (PyBUF_STRIDES | PyBUF_LOCKDATA | PyBUF_FORMAT)
 
-#define PyBUF_FULL (PyBUF_INDIRECT | PyBUF_WRITEABLE | PyBUF_FORMAT)
+#define PyBUF_FULL (PyBUF_INDIRECT | PyBUF_WRITABLE | PyBUF_FORMAT)
 #define PyBUF_FULL_RO (PyBUF_INDIRECT | PyBUF_FORMAT)
 #define PyBUF_FULL_LCK (PyBUF_INDIRECT | PyBUF_LOCKDATA | PyBUF_FORMAT)