diff --git a/src/lib.rs b/src/lib.rs
index 0cb9fe4..7df9b71 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -75,7 +75,7 @@ fn canonicalize_signed_zero<T: FloatCore>(x: T) -> T {
 /// s.insert(OrderedFloat(NAN));
 /// assert!(s.contains(&OrderedFloat(NAN)));
 /// ```
-#[derive(Debug, Default, Clone, Copy)]
+#[derive(Default, Clone, Copy)]
 #[repr(transparent)]
 pub struct OrderedFloat<T>(pub T);
 
@@ -193,6 +193,13 @@ impl<T: FloatCore> Hash for OrderedFloat<T> {
     }
 }
 
+impl<T: fmt::Debug> fmt::Debug for OrderedFloat<T> {
+    #[inline]
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        self.0.fmt(f)
+    }
+}
+
 impl<T: FloatCore + fmt::Display> fmt::Display for OrderedFloat<T> {
     #[inline]
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
@@ -1090,7 +1097,7 @@ impl<T: FloatCore + Num> Num for OrderedFloat<T> {
 /// // This will panic:
 /// let c = a + b;
 /// ```
-#[derive(PartialOrd, PartialEq, Debug, Default, Clone, Copy)]
+#[derive(PartialOrd, PartialEq, Default, Clone, Copy)]
 #[repr(transparent)]
 pub struct NotNan<T>(T);
 
@@ -1177,6 +1184,13 @@ impl<T: FloatCore> Hash for NotNan<T> {
     }
 }
 
+impl<T: fmt::Debug> fmt::Debug for NotNan<T> {
+    #[inline]
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        self.0.fmt(f)
+    }
+}
+
 impl<T: FloatCore + fmt::Display> fmt::Display for NotNan<T> {
     #[inline]
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {