diff --git a/src/evalvars.c b/src/evalvars.c
index e529758ef3..c840d872bd 100644
--- a/src/evalvars.c
+++ b/src/evalvars.c
@@ -968,7 +968,11 @@ heredoc_get(exarg_T *eap, char_u *cmd, int script_get, int vim9compile)
 	    }
 
 	    if (list_append_string(l, str, -1) == FAIL)
+	    {
+		if (free_str)
+		    vim_free(str);
 		break;
+	    }
 	    if (free_str)
 		vim_free(str);
 	}
diff --git a/src/version.c b/src/version.c
index 3f6baf6bb2..d46906ab27 100644
--- a/src/version.c
+++ b/src/version.c
@@ -729,6 +729,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1851,
 /**/
     1850,
 /**/