diff --git a/math-functions/src/main/java/com.bobocode/Functions.java b/math-functions/src/main/java/com.bobocode/Functions.java
index 80ebc20..73a32fd 100644
--- a/math-functions/src/main/java/com.bobocode/Functions.java
+++ b/math-functions/src/main/java/com.bobocode/Functions.java
@@ -14,7 +14,7 @@ public class Functions {
     public static FunctionMap<Integer, Integer> intFunctionMap() {
         FunctionMap<Integer, Integer> intFunctionMap = new FunctionMap<>();
 
-        // todo: add simple functions to the function map (abs, sng, increment, decrement, square)
+        // todo: add simple functions to the function map (abs, sgn, increment, decrement, square)
 
         return intFunctionMap;
     }