diff --git a/exercises/practice/largest-series-product/.docs/instructions.append.md b/exercises/practice/largest-series-product/.docs/instructions.append.md
index 9250db2e8c..5a0f9b9206 100644
--- a/exercises/practice/largest-series-product/.docs/instructions.append.md
+++ b/exercises/practice/largest-series-product/.docs/instructions.append.md
@@ -12,8 +12,8 @@ To raise a `ValueError` with a message, write the message as an argument to the
 # span of numbers is longer than number series
 raise ValueError("span must be smaller than string length")
 
-# span of number is zero or negative
-raise ValueError("span must be greater than zero")
+# span of number is negative
+raise ValueError("span must not be negative")
 
 # series includes non-number input
 raise ValueError("digits input must only contain digits")