diff --git a/library/core/src/num/int_macros.rs b/library/core/src/num/int_macros.rs
index ec460286d0378..1bf447347408d 100644
--- a/library/core/src/num/int_macros.rs
+++ b/library/core/src/num/int_macros.rs
@@ -2189,7 +2189,7 @@ macro_rules! int_impl {
         ///
         /// # Panics
         ///
-        /// When the number is zero, or if the base is not at least 2; it
+        /// When the number is negative, zero, or if the base is not at least 2; it
         /// panics in debug mode and the return value is 0 in release
         /// mode.
         ///
@@ -2223,7 +2223,7 @@ macro_rules! int_impl {
         ///
         /// # Panics
         ///
-        /// When the number is zero it panics in debug mode and the return value
+        /// When the number is negative or zero it panics in debug mode and the return value
         /// is 0 in release mode.
         ///
         /// # Examples
@@ -2256,7 +2256,7 @@ macro_rules! int_impl {
         ///
         /// # Panics
         ///
-        /// When the number is zero it panics in debug mode and the return value
+        /// When the number is negative or zero it panics in debug mode and the return value
         /// is 0 in release mode.
         ///
         /// # Example
diff --git a/library/core/src/num/uint_macros.rs b/library/core/src/num/uint_macros.rs
index 514ac69f7e049..ce52e4773ce1f 100644
--- a/library/core/src/num/uint_macros.rs
+++ b/library/core/src/num/uint_macros.rs
@@ -689,7 +689,7 @@ macro_rules! uint_impl {
         ///
         /// # Panics
         ///
-        /// When the number is negative, zero, or if the base is not at least 2;
+        /// When the number is zero, or if the base is not at least 2;
         /// it panics in debug mode and the return value is 0 in release mode.
         ///
         /// # Examples
@@ -722,7 +722,7 @@ macro_rules! uint_impl {
         ///
         /// # Panics
         ///
-        /// When the number is negative or zero it panics in debug mode and
+        /// When the number is zero it panics in debug mode and
         /// the return value is 0 in release mode.
         ///
         /// # Examples
@@ -755,7 +755,7 @@ macro_rules! uint_impl {
         ///
         /// # Panics
         ///
-        /// When the number is negative or zero it panics in debug mode and the
+        /// When the number is zero it panics in debug mode and the
         /// return value is 0 in release mode.
         ///
         /// # Example