diff --git a/src/main/py/calculations_with_roots.py b/src/main/py/calculations_with_roots.py
index 3b5f9ea..02cf33b 100644
--- a/src/main/py/calculations_with_roots.py
+++ b/src/main/py/calculations_with_roots.py
@@ -8,4 +8,6 @@ def multiplyRoots(first_number, second_number):
 def sqrt_power(base, exponent):
     if base < 0:
         return -1
+    if exponent == 0:
+        return 1
     return potentiate(sqrt(base), exponent)
\ No newline at end of file