diff --git a/lib/impure/zipfiles.nim b/lib/impure/zipfiles.nim
index d66d7d7f34..56483c5867 100644
--- a/lib/impure/zipfiles.nim
+++ b/lib/impure/zipfiles.nim
@@ -109,12 +109,13 @@ proc addFile*(z: var ZipArchive, dest: string, src: Stream) =
 # -------------- zip file stream ---------------------------------------------
 
 type
-  TZipFileStream = object of StreamObj
+  ZipFileStream = object of StreamObj
     f: PZipFile
     atEnd: bool
 
   PZipFileStream* =
     ref ZipFileStream ## a reader stream of a file within a zip archive
+{.deprecated: [TZipFileStream: ZipFileStream].}
 
 proc fsClose(s: Stream) = zip_fclose(PZipFileStream(s).f)
 proc fsAtEnd(s: Stream): bool = PZipFileStream(s).atEnd
diff --git a/tools/niminst/niminst.nim b/tools/niminst/niminst.nim
index 99befa92d6..253543a50b 100644
--- a/tools/niminst/niminst.nim
+++ b/tools/niminst/niminst.nim
@@ -538,7 +538,7 @@ when haveZipLib:
     var n = "$#.zip" % proj
     if c.outdir.len == 0: n = "build" / n
     else: n = c.outdir / n
-    var z: TZipArchive
+    var z: ZipArchive
     if open(z, n, fmWrite):
       addFile(z, proj / buildBatFile32, "build" / buildBatFile32)
       addFile(z, proj / buildBatFile64, "build" / buildBatFile64)