diff --git a/kernel/ps4_libkernel.pas b/kernel/ps4_libkernel.pas
index 3057dfad..8a640e83 100644
--- a/kernel/ps4_libkernel.pas
+++ b/kernel/ps4_libkernel.pas
@@ -478,7 +478,7 @@ type
   unk4:array[0.. 6] of Byte;    //7
  end;
 
-//sysctl to KERN_PROC_ENV
+//sysctl to CTL_KERN(1).KERN_PROC(14).KERN_PROC_APPINFO(35)
 function ps4_sceKernelGetAppInfo(pid:Integer;env:PSCE_APP_ENV):Integer; SysV_ABI_CDecl;
 begin
  //ignore pid
diff --git a/src/ps4_libscecomposite.pas b/src/ps4_libscecomposite.pas
index 6410496a..1857cc95 100644
--- a/src/ps4_libscecomposite.pas
+++ b/src/ps4_libscecomposite.pas
@@ -134,6 +134,15 @@ begin
  end;
 end;
 
+function ps4_sceCompositorGetCanvasHandle(canvasId:Byte;ret_handle:PDWORD):Integer; SysV_ABI_CDecl;
+var
+ app_id:Word;
+begin
+ app_id:=Word(GetProcessID);
+ ret_handle^:=app_id or (canvasId shl 16);
+ Result:=0;
+end;
+
 function Load_libSceComposite(Const name:RawByteString):TElf_node;
 var
  lib:PLIBRARY;
@@ -156,6 +165,8 @@ begin
  lib^.set_proc($1B843C28D91BE571,@ps4_sceCompositorAllocateIndex);
  lib^.set_proc($670B01077B3CA8C9,@ps4_sceCompositorReleaseIndex);
 
+ lib^.set_proc($37B3EB33E94F316D,@ps4_sceCompositorGetCanvasHandle);
+
  lib^.set_proc($7472BEAAEE43D873,@ps4_sceCompositorSetDebugPositionCommand);
 end;
 
diff --git a/src/ps4_libscesyscore.pas b/src/ps4_libscesyscore.pas
index 03640640..d06109b0 100644
--- a/src/ps4_libscesyscore.pas
+++ b/src/ps4_libscesyscore.pas
@@ -15,6 +15,11 @@ begin
  Result:=0;
 end;
 
+function ps4_sceApplicationSetCanvasHandle(canvasId:Byte;handle:DWORD):Integer; SysV_ABI_CDecl;
+begin
+ Result:=0;
+end;
+
 function Load_libSceSysCore(Const name:RawByteString):TElf_node;
 var
  lib:PLIBRARY;
@@ -25,6 +30,7 @@ begin
  lib:=Result._add_lib('libSceSysCore');
 
  lib^.set_proc($5C5608B4EC52EABD,@ps4_sceApplicationInitialize);
+ lib^.set_proc($A931E269B7C4BA4C,@ps4_sceApplicationSetCanvasHandle);
 end;
 
 initialization