diff --git a/apps/speed.c b/apps/speed.c
index 4c1f07cb8118f2e3dcc3bb07b36dd7380e70fffa..c398009be5550d26708e46bc82a7ec6e5947d3a7 100644
--- a/apps/speed.c
+++ b/apps/speed.c
@@ -253,7 +253,11 @@
 #endif
 
 #undef BUFSIZE
-#define BUFSIZE	((long)1024*8+1)
+/* BUFSIZE needs to be one cipherblock larger than the largest number in the
+   lengths array (see below), to make space for padding when doing EVP tests.
+   1024 extra bytes may seem much, but hey, it doesn't hurt!
+							-- Richard Levitte */
+#define BUFSIZE	((long)1024*9+1)
 int run=0;
 
 static char ftime_used = 0, times_used = 0, gettimeofday_used = 0, getrusage_used = 0;