diff --git a/src/test/stdtest/char.rs b/src/test/stdtest/char.rs
index 79b803dc6c8b..ac567d23341c 100644
--- a/src/test/stdtest/char.rs
+++ b/src/test/stdtest/char.rs
@@ -29,12 +29,14 @@ fn test_to_digit() {
 
 #[test]
 #[should_fail]
+#[ignore(cfg(target_os = "win32"))]
 fn test_to_digit_fail_1() {
     char::to_digit(' ');
 }
 
 #[test]
 #[should_fail]
+#[ignore(cfg(target_os = "win32"))]
 fn test_to_digit_fail_2() {
     char::to_digit('$');
 }
diff --git a/src/test/stdtest/int.rs b/src/test/stdtest/int.rs
index 28b9b94c2ff4..9136289e9360 100644
--- a/src/test/stdtest/int.rs
+++ b/src/test/stdtest/int.rs
@@ -21,12 +21,14 @@ fn test_from_str() {
 
 #[test]
 #[should_fail]
+#[ignore(cfg(target_os = "win32"))]
 fn test_from_str_fail_1() {
     int::from_str(" ");
 }
 
 #[test]
 #[should_fail]
+#[ignore(cfg(target_os = "win32"))]
 fn test_from_str_fail_2() {
     int::from_str("x");
 }
@@ -54,12 +56,14 @@ fn test_parse_buf() {
 
 #[test]
 #[should_fail]
+#[ignore(cfg(target_os = "win32"))]
 fn test_parse_buf_fail_1() {
     int::parse_buf(bytes("Z"), 35u);
 }
 
 #[test]
 #[should_fail]
+#[ignore(cfg(target_os = "win32"))]
 fn test_parse_buf_fail_2() {
     int::parse_buf(bytes("-9"), 2u);
 }
diff --git a/src/test/stdtest/uint.rs b/src/test/stdtest/uint.rs
index 6a2b5bdbd3ae..0ba2ac39c1d3 100644
--- a/src/test/stdtest/uint.rs
+++ b/src/test/stdtest/uint.rs
@@ -16,12 +16,14 @@ fn test_from_str() {
 
 #[test]
 #[should_fail]
+#[ignore(cfg(target_os = "win32"))]
 fn test_from_str_fail_1() {
     uint::from_str(" ");
 }
 
 #[test]
 #[should_fail]
+#[ignore(cfg(target_os = "win32"))]
 fn test_from_str_fail_2() {
     uint::from_str("x");
 }
@@ -38,12 +40,14 @@ fn test_parse_buf() {
 
 #[test]
 #[should_fail]
+#[ignore(cfg(target_os = "win32"))]
 fn test_parse_buf_fail_1() {
     uint::parse_buf(bytes("Z"), 10u);
 }
 
 #[test]
 #[should_fail]
+#[ignore(cfg(target_os = "win32"))]
 fn test_parse_buf_fail_2() {
     uint::parse_buf(bytes("_"), 2u);
 }