diff --git a/cipher/ChangeLog b/cipher/ChangeLog
index 17ef1f94e..3058881b6 100644
--- a/cipher/ChangeLog
+++ b/cipher/ChangeLog
@@ -1,3 +1,7 @@
+2002-09-17  Werner Koch  <wk@gnupg.org>
+
+	* rndw32.c (SIZEOF_DISK_PERFORMANCE_STRUCT): Increased to 256.
+
 2002-09-12  Stefan Bellon  <sbellon@sbellon.de>
 
 	* rand-internal.h (rndriscos_gather_random): Added prototype.
diff --git a/cipher/rndw32.c b/cipher/rndw32.c
index 87aa20878..c5f855ca6 100644
--- a/cipher/rndw32.c
+++ b/cipher/rndw32.c
@@ -104,7 +104,9 @@ static int debug_me;
 #define VER_PLATFORM_WIN32_WINDOWS 1
 #endif
 
-#define SIZEOF_DISK_PERFORMANCE_STRUCT (6*8+5*4+8*2)
+/* This used to be (6*8+5*4+8*2), but Peter Gutmann figured a larger
+   value in a newer release. So we use a far larger value. */
+#define SIZEOF_DISK_PERFORMANCE_STRUCT 256
 
 
 typedef struct {