diff --git a/ssh2bpp.c b/ssh2bpp.c
index 0ea1f793..11f5d08b 100644
--- a/ssh2bpp.c
+++ b/ssh2bpp.c
@@ -145,10 +145,10 @@ void ssh2_bpp_new_incoming_crypto(
     }
 
     s->in.comp = compression;
-    /* out_comp is always non-NULL, because no compression is
+    /* in_comp is always non-NULL, because no compression is
      * indicated by ssh_comp_none. So compress_init always exists, but
-     * it may return a null out_comp_ctx. */
-    s->in.comp_ctx = compression->compress_init();
+     * it may return a null in_comp_ctx. */
+    s->in.comp_ctx = compression->decompress_init();
 
     /* Clear the pending_newkeys flag, so that handle_input below will
      * start consuming the input data again. */