diff --git a/src/kv/error.rs b/src/kv/error.rs
index 640705fd3..45243ca9b 100644
--- a/src/kv/error.rs
+++ b/src/kv/error.rs
@@ -41,12 +41,6 @@ impl From<fmt::Error> for Error {
     }
 }
 
-impl From<Error> for fmt::Error {
-    fn from(_: Error) -> Self {
-        fmt::Error
-    }
-}
-
 #[cfg(feature = "std")]
 mod std_support {
     use super::*;
diff --git a/src/kv/value/internal/fmt.rs b/src/kv/value/internal/fmt.rs
index f8b92a3a1..2f7a00e77 100644
--- a/src/kv/value/internal/fmt.rs
+++ b/src/kv/value/internal/fmt.rs
@@ -65,7 +65,7 @@ pub(in kv::value) use self::fmt::{Arguments, Debug, Display};
 
 impl<'v> fmt::Debug for kv::Value<'v> {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        self.visit(&mut FmtVisitor(f))?;
+        self.visit(&mut FmtVisitor(f)).map_err(|_| fmt::Error)?;
 
         Ok(())
     }
@@ -73,7 +73,7 @@ impl<'v> fmt::Debug for kv::Value<'v> {
 
 impl<'v> fmt::Display for kv::Value<'v> {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        self.visit(&mut FmtVisitor(f))?;
+        self.visit(&mut FmtVisitor(f)).map_err(|_| fmt::Error)?;
 
         Ok(())
     }
diff --git a/src/lib.rs b/src/lib.rs
index fceda8044..4e5c6c447 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -747,7 +747,7 @@ struct KeyValues<'a>(&'a dyn kv::Source);
 impl<'a> fmt::Debug for KeyValues<'a> {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         let mut visitor = f.debug_map();
-        self.0.visit(&mut visitor)?;
+        self.0.visit(&mut visitor).map_err(|_| fmt::Error)?;
         visitor.finish()
     }
 }