diff --git a/src/builtin_complete.cpp b/src/builtin_complete.cpp
index cf5b14df5..5b2fd4d8b 100644
--- a/src/builtin_complete.cpp
+++ b/src/builtin_complete.cpp
@@ -280,7 +280,7 @@ int builtin_complete(parser_t &parser, io_streams_t &streams, wchar_t **argv) {
             streams.err.append_format(L"%ls: Condition '%ls' contained a syntax error", cmd,
                                       condition);
             for (size_t i = 0; i < errors.size(); i++) {
-                streams.err.append_format(L"\n%s: ", cmd);
+                streams.err.append_format(L"\n%ls: ", cmd);
                 streams.err.append(errors.at(i).describe(condition_string));
             }
             return STATUS_CMD_ERROR;
diff --git a/src/env_dispatch.cpp b/src/env_dispatch.cpp
index cae845b6a..6f98b4121 100644
--- a/src/env_dispatch.cpp
+++ b/src/env_dispatch.cpp
@@ -376,7 +376,7 @@ static void update_fish_color_support(const environment_t &vars) {
     // Handle $fish_term24bit
     if (auto fish_term24bit = vars.get(L"fish_term24bit")) {
         support_term24bit = bool_from_string(fish_term24bit->as_string());
-        debug(2, L"'fish_term24bit' preference: 24-bit color %s",
+        debug(2, L"'fish_term24bit' preference: 24-bit color %ls",
               support_term24bit ? L"enabled" : L"disabled");
     } else {
         // We don't attempt to infer term24 bit support yet.