diff --git a/src/sqliteInt.h b/src/sqliteInt.h
index 8613d86..6e48b1c 100644
--- a/src/sqliteInt.h
+++ b/src/sqliteInt.h
@@ -126,6 +126,14 @@
 #endif
 
 /*
+** Powersafe overwrite is on by default.  But can be turned off using
+** the -DSQLITE_POWERSAFE_OVERWRITE=0 command-line option.
+*/
+#ifndef SQLITE_POWERSAFE_OVERWRITE
+# define SQLITE_POWERSAFE_OVERWRITE 1
+#endif
+
+/*
 ** The SQLITE_DEFAULT_MEMSTATUS macro must be defined as either 0 or 1.
 ** It determines whether or not the features related to 
 ** SQLITE_CONFIG_MEMSTATUS are available by default or not. This value can