diff --git a/.wiki/Kernel-documentation.md b/.wiki/Kernel-documentation.md
index 3dc10d5..2d43158 100644
--- a/.wiki/Kernel-documentation.md
+++ b/.wiki/Kernel-documentation.md
@@ -364,6 +364,9 @@ Example: `FLOOR_TO(13, 8)` would return 8, because 8 is the next smaller multipl
 #### `pow(base, exponent)` - function (uint64_t)
 Returns the power of `base ^ exponent`.
 
+#### `abs(number)` - function (uint64_t)
+Returns the absolute value of **_number_**.
+
 ### memory.h
 Basic memory functionalities.