diff --git a/console/rgl/ps3/rgl.h b/console/rgl/ps3/rgl.h
index 5016752d1a..de9ee1b414 100644
--- a/console/rgl/ps3/rgl.h
+++ b/console/rgl/ps3/rgl.h
@@ -774,7 +774,7 @@ struct RGLResource
    RGLSemaphoreMemory *semaphores;
 };
 
-typedef struct
+typedef volatile struct
 {
    GLuint Ignored00[0x010];
    GLuint Put;
diff --git a/ps3/sdk_defines.h b/ps3/sdk_defines.h
index 398b6050e0..0b6d455519 100644
--- a/ps3/sdk_defines.h
+++ b/ps3/sdk_defines.h
@@ -310,20 +310,6 @@
 #define SYS_PPU_THREAD_CREATE_JOINABLE 0 /* FIXME - not sure if this is correct */
 #endif
 
-/*============================================================
-	SEMAPHORE PROTOTYPES
-============================================================ */
-
-#ifdef __PSL1GHT__
-#include <sys/sem.h>
-#define sys_semaphore_attribute_t sys_sem_attr_t
-#define sys_semaphore_value_t s32
-
-#define sys_semaphore_create sysSemCreate
-#define sys_semaphore_destroy sysSemDestroy
-#define sys_semaphore_post sysSemPost
-#endif
-
 /*============================================================
 	MEMORY PROTOTYPES
 ============================================================ */