diff --git a/src/libultra/io/epirawread.c b/src/libultra/io/epirawread.c
index 317f7d63ec..df0c6b603b 100644
--- a/src/libultra/io/epirawread.c
+++ b/src/libultra/io/epirawread.c
@@ -1,6 +1,6 @@
 #include "global.h"
 
-s32 __osEPiRawReadIo(OSPiHandle* handle, u32 devAddr, u32* data) {
+s32 __osEPiRawReadIo(OSPiHandle* handle, uintptr_t devAddr, u32* data) {
     s32 status;
     OSPiHandle* curHandle;
 
diff --git a/src/libultra/io/epiread.c b/src/libultra/io/epiread.c
index efab23bbb3..5a2205bdc5 100644
--- a/src/libultra/io/epiread.c
+++ b/src/libultra/io/epiread.c
@@ -1,3 +1,11 @@
 #include "global.h"
 
-#pragma GLOBAL_ASM("asm/non_matchings/boot/epiread/osEPiReadIo.s")
+s32 osEPiReadIo(OSPiHandle* handle, uintptr_t devAddr, u32* data) {
+    register s32 ret;
+
+    __osPiGetAccess();
+    ret = __osEPiRawReadIo(handle, devAddr, data);
+    __osPiRelAccess();
+
+    return ret;
+}