diff --git a/README.md b/README.md
index 2aa52cd..c1ace19 100644
--- a/README.md
+++ b/README.md
@@ -232,6 +232,7 @@ Zig Core Language
 * [X] Working with C
 * [X] Threading
 * [x] Labeled switch
+* [x] Vector operations (SIMD)
 
 Zig Standard Library
 
diff --git a/exercises/046_optionals2.zig b/exercises/046_optionals2.zig
index a5436d9..b5fffbb 100644
--- a/exercises/046_optionals2.zig
+++ b/exercises/046_optionals2.zig
@@ -48,7 +48,7 @@ pub fn main() void {
 // If e1 and e2 are valid pointers to elephants,
 // this function links the elephants so that e1's tail "points" to e2.
 fn linkElephants(e1: ?*Elephant, e2: ?*Elephant) void {
-    e1.?.*.tail = e2.?;
+    e1.?.tail = e2.?;
 }
 
 // This function visits all elephants once, starting with the
diff --git a/exercises/105_threading2.zig b/exercises/105_threading2.zig
index 7ca8f5c..7e16a1c 100644
--- a/exercises/105_threading2.zig
+++ b/exercises/105_threading2.zig
@@ -39,7 +39,7 @@
 // in practice. Because either you don't need the precision, or you use a
 // calculator in which the number is stored as a very precise constant.
 // But at some point this constant was calculated and we are doing the same
-// now.The question at this point is, how many partial values do we have
+// now. The question at this point is, how many partial values do we have
 // to calculate for which accuracy?
 //
 // The answer is chewing, to get 8 digits after the decimal point we need
diff --git a/patches/patches/046_optionals2.patch b/patches/patches/046_optionals2.patch
index 1b364a6..8fa01a2 100644
--- a/patches/patches/046_optionals2.patch
+++ b/patches/patches/046_optionals2.patch
@@ -1,5 +1,5 @@
---- exercises/046_optionals2.zig	2024-09-04 20:51:36.766783971 +0200
-+++ answers/046_optionals2.zig	2024-09-04 20:51:01.389400985 +0200
+--- exercises/046_optionals2.zig	2024-11-08 22:46:25.592875338 +0100
++++ answers/046_optionals2.zig	2024-11-08 22:46:20.699447951 +0100
 @@ -22,7 +22,7 @@
  
  const Elephant = struct {