diff --git a/third_party/lua/lrepl.c b/third_party/lua/lrepl.c
index 3312918e9..c2253c129 100644
--- a/third_party/lua/lrepl.c
+++ b/third_party/lua/lrepl.c
@@ -335,7 +335,7 @@ void lua_initrepl(lua_State *L) {
     prompt = get_prompt(L, 1);
     if ((g_historypath = linenoiseGetHistoryPath(lua_progname))) {
       if (linenoiseHistoryLoad(g_historypath) == -1) {
-        fprintf(stderr, "%r%s: failed to load history: %m%n", g_historypath);
+        fprintf(stderr, "%r%s: failed to load history: %m\n", g_historypath);
         free(g_historypath);
         g_historypath = 0;
       }
diff --git a/tool/viz/rlimit.c b/tool/viz/rlimit.c
index e4b4e4ae9..cc7821c3c 100644
--- a/tool/viz/rlimit.c
+++ b/tool/viz/rlimit.c
@@ -43,7 +43,7 @@ static void SetLimit(int resource, uint64_t soft, uint64_t hard) {
         return;
       }
     }
-    fprintf(stderr, "ERROR: SETRLIMIT(%s, %,ld, %,ld) FAILED %m%n",
+    fprintf(stderr, "ERROR: SETRLIMIT(%s, %,ld, %,ld) FAILED %m\n",
             DescribeRlimitName(resource), soft, hard);
     exit(1);
   }