diff --git a/renderdoc/api/app/renderdoc_app.h b/renderdoc/api/app/renderdoc_app.h
index d84afe2e6..291c06597 100644
--- a/renderdoc/api/app/renderdoc_app.h
+++ b/renderdoc/api/app/renderdoc_app.h
@@ -35,7 +35,7 @@
 
 #if defined(WIN32) || defined(__WIN32__) || defined(_WIN32) || defined(_MSC_VER)
 #define RENDERDOC_CC __cdecl
-#elif defined(__linux__) || defined(__FreeBSD__) || defined(__sun__)
+#elif defined(__linux__) || defined(__FreeBSD__) || defined(__sun__) || defined(__OpenBSD__)
 #define RENDERDOC_CC
 #elif defined(__APPLE__)
 #define RENDERDOC_CC