diff --git a/reactos/include/psdk/winbase.h b/reactos/include/psdk/winbase.h
index 36093af4c29..0e235ee6213 100644
--- a/reactos/include/psdk/winbase.h
+++ b/reactos/include/psdk/winbase.h
@@ -1054,11 +1054,6 @@ typedef enum _COMPUTER_NAME_FORMAT {
 	ComputerNameMax
 } COMPUTER_NAME_FORMAT;
 #endif /* (_WIN32_WINNT >= 0x0500) */
-typedef struct _JOB_SET_ARRAY {
-	HANDLE JobHandle;
-	DWORD MemberLevel;
-	DWORD Flags;
-} JOB_SET_ARRAY, *PJOB_SET_ARRAY;
 #if (_WIN32_WINNT >= 0x0600)
 typedef RTL_SRWLOCK SRWLOCK, *PSRWLOCK;
 typedef RTL_CONDITION_VARIABLE CONDITION_VARIABLE, *PCONDITION_VARIABLE;