diff --git a/rlp.nim b/rlp.nim
index cdc44d5..90e28c2 100644
--- a/rlp.nim
+++ b/rlp.nim
@@ -278,7 +278,7 @@ proc read*(rlp: var Rlp, T: typedesc[enum]): T =
 proc read*[R, E](rlp: var Rlp, T: type array[R, E]): T =
   mixin read
 
-  when E is byte:
+  when E is (byte or char):
     if not rlp.isBlob:
       raise newException(BadCastError, "The source RLP is not a blob.")
 
@@ -302,7 +302,7 @@ proc read*[R, E](rlp: var Rlp, T: type array[R, E]): T =
 proc read*[E](rlp: var Rlp, T: type seq[E]): T =
   mixin read
 
-  when E is byte:
+  when E is (byte or char):
     var bytes = rlp.toBytes
     result = newSeq[byte](bytes.len)
     copyMem(addr result[0], bytes.baseAddr, bytes.len)
diff --git a/rlp/writer.nim b/rlp/writer.nim
index 122f667..1bd78ca 100644
--- a/rlp/writer.nim
+++ b/rlp/writer.nim
@@ -148,6 +148,9 @@ proc append*(self; data: string) =
 proc appendBlob(self; data: openarray[byte]) =
   appendImpl(self, data, BLOB_START_MARKER)
 
+proc appendBlob(self; data: openarray[char]) =
+  appendImpl(self, data, BLOB_START_MARKER)
+
 proc appendBytesRange(self; data: BytesRange) =
   appendImpl(self, data, BLOB_START_MARKER)
 
@@ -176,7 +179,7 @@ proc append*[T](self; listOrBlob: openarray[T]) =
 
   # TODO: This append proc should be overloaded by `openarray[byte]` after
   # nim bug #7416 is fixed.
-  when T is byte:
+  when T is (byte or char):
     self.appendBlob(listOrBlob)
   else:
     self.startList listOrBlob.len