diff --git a/os_functions.c b/os_functions.c
index c993486..9266ad0 100644
--- a/os_functions.c
+++ b/os_functions.c
@@ -165,6 +165,7 @@ EXPORT_DECL(s32, OSSendAppSwitchRequest,s32 param,void* unknown1,void* unknown2)
 //!----------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 
 EXPORT_DECL(s32, IOS_Ioctl,s32 fd, u32 request, void *input_buffer,u32 input_buffer_len, void *output_buffer, u32 output_buffer_len);
+EXPORT_DECL(s32, IOS_IoctlAsync,s32 fd, u32 request, void *input_buffer,u32 input_buffer_len, void *output_buffer, u32 output_buffer_len, void *cb, void *cbarg);
 EXPORT_DECL(s32, IOS_Open,char *path, u32 mode);
 EXPORT_DECL(s32, IOS_Close,s32 fd);
 
@@ -333,6 +334,7 @@ void InitOSFunctionPointers(void)
     //! IOS functions
     //!----------------------------------------------------------------------------------------------------------------------------------------------------------------------------
     OS_FIND_EXPORT(coreinit_handle, IOS_Ioctl);
+    OS_FIND_EXPORT(coreinit_handle, IOS_IoctlAsync);
     OS_FIND_EXPORT(coreinit_handle, IOS_Open);
     OS_FIND_EXPORT(coreinit_handle, IOS_Close);
 
diff --git a/os_functions.h b/os_functions.h
index e1888cf..6266f97 100644
--- a/os_functions.h
+++ b/os_functions.h
@@ -208,6 +208,7 @@ extern s32 (*OSSendAppSwitchRequest)(s32 param,void* unknown1,void* unknown2);
 //!----------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 
 extern s32 (*IOS_Ioctl)(s32 fd, u32 request, void *input_buffer,u32 input_buffer_len, void *output_buffer, u32 output_buffer_len);
+extern s32 (*IOS_IoctlAsync)(s32 fd, u32 request, void *input_buffer,u32 input_buffer_len, void *output_buffer, u32 output_buffer_len, void *cb, void *cbarg);
 extern s32 (*IOS_Open)(char *path, u32 mode);
 extern s32 (*IOS_Close)(s32 fd);