diff --git a/src/memfile.c b/src/memfile.c
index a21b7076ae..5b13d510ea 100644
--- a/src/memfile.c
+++ b/src/memfile.c
@@ -1032,8 +1032,9 @@ mf_read(mfp, hp)
     }
 
 #ifdef FEAT_CRYPT
-    /* Decrypt if 'key' is set and this is a data block. */
-    if (*mfp->mf_buffer->b_p_key != NUL)
+    /* Decrypt if 'key' is set and this is a data block. And when changing the
+     * key. */
+    if (*mfp->mf_buffer->b_p_key != NUL || mfp->mf_old_key != NULL)
 	ml_decrypt_data(mfp, hp->bh_data, offset, size);
 #endif
 
diff --git a/src/version.c b/src/version.c
index f1bf8733e4..f949e64273 100644
--- a/src/version.c
+++ b/src/version.c
@@ -741,6 +741,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    979,
 /**/
     978,
 /**/