diff --git a/README.md b/README.md
index b2f07c20339f9515867dc0dd2816336c583efb00..351745638c57ad028b9a26a2cde805f19a5e73c2 100644
--- a/README.md
+++ b/README.md
@@ -149,7 +149,7 @@ Seminars
 
         The `seed`, `abc`,`coded` and `plain` should be stack allocated. The decoded string should be printed when decryption is finished.
 
-        b. Make the `seed`, `abc`,`coded` and `plain` heap allocated. Accessing those will require some `unsafe` code. (Keep the unsafe blocks as local as possible, perhaps you can do all in *safe* Rust.)
+        b. Make the `seed`, `abc`,`coded` and `plain` static (heap) allocated (i.e., as global varibles). Accessing those will require some `unsafe` code. (Keep the unsafe blocks as local as possible.)
 
         c. Safety analysis. Provoke the implementation, by omitting the `'\0'` (null termination). Observe the result and motivate the behavior in terms of your understanding of the Rust memory model. Under which circumstances do you consider 3a and 3b to have same/different memory safety.