diff --git a/build/wx/setup-build.h b/build/wx/setup-build.h
index dd14efced..b4d7c0b5e 100644
--- a/build/wx/setup-build.h
+++ b/build/wx/setup-build.h
@@ -29,7 +29,7 @@
 #define wxUSE_CMDLINE_PARSER 0
 #define wxUSE_THREADS 1
 #define wxUSE_STREAMS 1
-#define wxUSE_STD_IOSTREAM 1
+#define wxUSE_STD_IOSTREAM 0
 #define wxUSE_STD_STRING 1
 #define wxUSE_PRINTF_POS_PARAMS 1
 #define wxUSE_LONGLONG 1
diff --git a/src/utils.cpp b/src/utils.cpp
index 1eefa80da..989ca9971 100644
--- a/src/utils.cpp
+++ b/src/utils.cpp
@@ -105,7 +105,7 @@ void RestartAegisub() {
 	if (bundle_path.empty() || helper_path.empty()) return;
 
 	wxString exec = fmt_wx("\"%s\" /usr/bin/open -n \"%s\"'", helper_path, bundle_path);
-	LOG_I("util/restart/exec") << exec;
+	LOG_I("util/restart/exec") << exec.utf8_str();
 	wxExecute(exec);
 #else
 	wxExecute(wxStandardPaths::Get().GetExecutablePath());