diff --git a/physics/coulombs_law.py b/physics/coulombs_law.py
index 252e8ec0f..fe2d358f6 100644
--- a/physics/coulombs_law.py
+++ b/physics/coulombs_law.py
@@ -32,7 +32,7 @@ def coulombs_law(q1: float, q2: float, radius: float) -> float:
     17975103584.6
     """
     if radius <= 0:
-        raise ValueError("The radius is always a positive non zero integer")
+        raise ValueError("The radius is always a positive number")
     return round(((8.9875517923 * 10**9) * q1 * q2) / (radius**2), 2)