diff --git a/doc/Changelog b/doc/Changelog
index b8a923bcf..e95b76bb5 100644
--- a/doc/Changelog
+++ b/doc/Changelog
@@ -1,3 +1,6 @@
+23 February 2023: Wouter
+	- Fix for #852: Completion of error handling.
+
 21 February 2023: Philip
        - Fix #825: Unexpected behavior with client-subnet-always-forward
          and serve-expired
diff --git a/testcode/lock_verify.c b/testcode/lock_verify.c
index b0cffe292..0958ff0ba 100644
--- a/testcode/lock_verify.c
+++ b/testcode/lock_verify.c
@@ -177,6 +177,8 @@ static int readup_str(char** str, FILE* in)
 	}
 	buf[len] = 0;
 	*str = strdup(buf);
+	if(!*str)
+		fatal_exit("strdup failed: out of memory");
 	return 1;
 }