Index: src/3rdparty/ImGuiFileDialog/ImGuiFileDialog.cc
--- src/3rdparty/ImGuiFileDialog/ImGuiFileDialog.cc.orig
+++ src/3rdparty/ImGuiFileDialog/ImGuiFileDialog.cc
@@ -99,7 +99,7 @@ static void RightAlignText(const char* text, const cha
 #ifndef PATH_MAX
 #define PATH_MAX 260
 #endif  // PATH_MAX
-#elif defined(__linux__) || defined(__FreeBSD__) || defined(__DragonFly__) || defined(__NetBSD__) || defined(__APPLE__) || defined(__EMSCRIPTEN__)
+#elif defined(__linux__) || defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) || defined(__NetBSD__) || defined(__APPLE__) || defined(__EMSCRIPTEN__)
 #define _IGFD_UNIX_
 #define stricmp strcasecmp
 #include <sys/types.h>
