diff --git a/kernel/ps4_libkernel.pas b/kernel/ps4_libkernel.pas
index 0d8ab989..cf3e715d 100644
--- a/kernel/ps4_libkernel.pas
+++ b/kernel/ps4_libkernel.pas
@@ -1234,6 +1234,9 @@ begin
  lib^.set_proc($DEAC603387B31130,@ps4_scePthreadAttrSetaffinity);
  lib^.set_proc($F3EB39073663C528,@ps4_scePthreadAttrGetaffinity);
 
+ lib^.set_proc($24AC86DD25B2035D,@ps4_pthread_attr_setguardsize);
+ lib^.set_proc($125F9C436D03CA75,@ps4_scePthreadAttrSetguardsize);
+
  lib^.set_proc($24D91556C54398E9,@ps4_pthread_attr_getguardsize);
  lib^.set_proc($B711ED9E027E7B27,@ps4_scePthreadAttrGetguardsize);
 
diff --git a/kernel/ps4_pthread_attr.pas b/kernel/ps4_pthread_attr.pas
index 64a2e3d6..9883643d 100644
--- a/kernel/ps4_pthread_attr.pas
+++ b/kernel/ps4_pthread_attr.pas
@@ -60,6 +60,9 @@ function  ps4_scePthreadAttrSetinheritsched(pAttr:p_pthread_attr_t;sched_inherit
 function  ps4_scePthreadAttrSetaffinity(pAttr:p_pthread_attr_t;mask:QWORD):Integer; SysV_ABI_CDecl;
 function  ps4_scePthreadAttrGetaffinity(pAttr:p_pthread_attr_t;mask:PQWORD):Integer; SysV_ABI_CDecl;
 
+function  ps4_pthread_attr_setguardsize(pAttr:p_pthread_attr_t;guardSize:QWORD):Integer; SysV_ABI_CDecl;
+function  ps4_scePthreadAttrSetguardsize(pAttr:p_pthread_attr_t;guardSize:QWORD):Integer; SysV_ABI_CDecl;
+
 function  ps4_pthread_attr_getguardsize(pAttr:p_pthread_attr_t;guardSize:PQWORD):Integer; SysV_ABI_CDecl;
 function  ps4_scePthreadAttrGetguardsize(pAttr:p_pthread_attr_t;guardSize:PQWORD):Integer; SysV_ABI_CDecl;
 
@@ -266,6 +269,19 @@ begin
  Result:=0;
 end;
 
+function ps4_pthread_attr_setguardsize(pAttr:p_pthread_attr_t;guardSize:QWORD):Integer; SysV_ABI_CDecl;
+begin
+ if (pAttr=nil) then Exit(EINVAL);
+ if (pAttr^=nil) then Exit(EINVAL);
+ pAttr^^.guardsize_attr:=guardSize;
+ Result:=0;
+end;
+
+function ps4_scePthreadAttrSetguardsize(pAttr:p_pthread_attr_t;guardSize:QWORD):Integer; SysV_ABI_CDecl;
+begin
+ Result:=px2sce(ps4_pthread_attr_setguardsize(pAttr,guardSize));
+end;
+
 function ps4_pthread_attr_getguardsize(pAttr:p_pthread_attr_t;guardSize:PQWORD):Integer; SysV_ABI_CDecl;
 begin
  if (pAttr=nil) or (guardSize=nil) then Exit(EINVAL);