diff --git a/src/libcore/num/mod.rs b/src/libcore/num/mod.rs
index c6cbeea5a0ea..fada8efbd218 100644
--- a/src/libcore/num/mod.rs
+++ b/src/libcore/num/mod.rs
@@ -4768,11 +4768,11 @@ fn from_str_radix<T: FromStrRadixHelper>(src: &str, radix: u32) -> Result<T, Par
 #[derive(Debug, Clone, PartialEq, Eq)]
 #[stable(feature = "rust1", since = "1.0.0")]
 pub struct ParseIntError {
-    kind: IntErrorKind,
+    pub kind: IntErrorKind,
 }
 
 #[derive(Debug, Clone, PartialEq, Eq)]
-enum IntErrorKind {
+pub enum IntErrorKind {
     Empty,
     InvalidDigit,
     Overflow,