diff --git a/subjects/str_isnegative/README.md b/subjects/str_isnegative/README.md
index 6ecc0114..6a561dac 100644
--- a/subjects/str_isnegative/README.md
+++ b/subjects/str_isnegative/README.md
@@ -3,7 +3,7 @@
 
 ### Instructions
 
-Write a function named `Str_isNegative()` that defines if a number (You should check if it's a number) is negative or positive.
+Write a function named `StrisNegative()` that defines if a number (You should check if it's a number) is negative or positive.
 
 - Your function print P if the number is positive
 - Your function print F if the number is negative