diff --git a/cpukit/libmisc/untar/untar.h b/cpukit/libmisc/untar/untar.h
index b97d1d5154..bc0a97c103 100644
--- a/cpukit/libmisc/untar/untar.h
+++ b/cpukit/libmisc/untar/untar.h
@@ -233,7 +233,7 @@ int Untar_XzChunkContext_Init(
  */
 int Untar_FromXzChunk_Print(
   Untar_XzChunkContext *ctx,
-  void *chunk,
+  const void *chunk,
   size_t chunk_size,
   const rtems_printer* printer
 );
diff --git a/cpukit/libmisc/untar/untar_txz.c b/cpukit/libmisc/untar/untar_txz.c
index 89c7a06e85..0b0594c12e 100644
--- a/cpukit/libmisc/untar/untar_txz.c
+++ b/cpukit/libmisc/untar/untar_txz.c
@@ -37,7 +37,7 @@ int Untar_XzChunkContext_Init(
 
 int Untar_FromXzChunk_Print(
   Untar_XzChunkContext *ctx,
-  void *chunk,
+  const void *chunk,
   size_t chunk_size,
   const rtems_printer *printer
 )