Index: src/sqliteInt.h
==================================================================
--- src/sqliteInt.h
+++ src/sqliteInt.h
@@ -1509,13 +1509,14 @@
 #define SQLITE_DistinctOpt    0x0010   /* DISTINCT using indexes */
 #define SQLITE_CoverIdxScan   0x0020   /* Covering index scans */
 #define SQLITE_OrderByIdxJoin 0x0040   /* ORDER BY of joins via index */
 #define SQLITE_Transitive     0x0080   /* Transitive constraints */
 #define SQLITE_OmitNoopJoin   0x0100   /* Omit unused tables in joins */
-#define SQLITE_Stat34         0x0200   /* Use STAT3 or STAT4 data */
-#define SQLITE_CountOfView    0x0400   /* The count-of-view optimization */
-#define SQLITE_CursorHints    0x0800   /* Add OP_CursorHint opcodes */
+#define SQLITE_CountOfView    0x0200   /* The count-of-view optimization */
+#define SQLITE_CursorHints    0x0400   /* Add OP_CursorHint opcodes */
+#define SQLITE_Stat34         0x0800   /* Use STAT3 or STAT4 data */
+   /* TH3 expects the Stat34  ^^^^^^ value to be 0x0800.  Don't change it */
 #define SQLITE_AllOpts        0xffff   /* All optimizations */
 
 /*
 ** Macros for testing whether or not optimizations are enabled or disabled.
 */