diff --git a/include/SDL3/SDL_thread.h b/include/SDL3/SDL_thread.h
index 34378bba88..ae445b2848 100644
--- a/include/SDL3/SDL_thread.h
+++ b/include/SDL3/SDL_thread.h
@@ -30,6 +30,7 @@
 
 #include <SDL3/SDL_stdinc.h>
 #include <SDL3/SDL_error.h>
+#include <SDL3/SDL_properties.h>
 
 /* Thread synchronization primitives */
 #include <SDL3/SDL_atomic.h>