diff --git a/renderdoc/os/win32/win32_process.cpp b/renderdoc/os/win32/win32_process.cpp
index 71ff4a4a2..e611b2835 100644
--- a/renderdoc/os/win32/win32_process.cpp
+++ b/renderdoc/os/win32/win32_process.cpp
@@ -511,7 +511,7 @@ void Process::StartGlobalHook(const char *pathmatch, const char *logfile, const
 	wstring wlogfile = logfile == NULL ? L"" : StringFormat::UTF82Wide(string(logfile));
 	wstring wpathmatch = StringFormat::UTF82Wide(string(pathmatch));
 
-	_snwprintf_s(paramsAlloc, 2047, 2047, L"\"%ls\" --globalhook \"%ls\" \"%ls\" \"%s\"",
+	_snwprintf_s(paramsAlloc, 2047, 2047, L"\"%ls\" --globalhook \"%ls\" \"%ls\" \"%hs\"",
 		renderdocPath, wpathmatch.c_str(), wlogfile.c_str(), optstr.c_str());
 
 	paramsAlloc[2047] = 0;