diff --git a/dll/ntdll/dispatch/amd64/dispatch.S b/dll/ntdll/dispatch/amd64/dispatch.S
index c78ff86e78d..a78ca687c23 100644
--- a/dll/ntdll/dispatch/amd64/dispatch.S
+++ b/dll/ntdll/dispatch/amd64/dispatch.S
@@ -67,7 +67,7 @@ PUBLIC KiUserCallbackDispatcher
     .PUSHFRAME
 
     /* This is for the Home space, Buffer, Length and ApiNumber */
-    .ALLOCSTACK 6 * 8
+    .ALLOCSTACK (6 * 8)
     .ENDPROLOG
 
 #if DBG
diff --git a/ntoskrnl/ke/amd64/ctxswitch.S b/ntoskrnl/ke/amd64/ctxswitch.S
index ddd9a734499..94c726aa486 100644
--- a/ntoskrnl/ke/amd64/ctxswitch.S
+++ b/ntoskrnl/ke/amd64/ctxswitch.S
@@ -146,7 +146,7 @@ PUBLIC KiThreadStartup
     push rbp
     .pushreg rbp
     sub rsp, 6 * 8
-    .allocstack 6 * 8
+    .allocstack (6 * 8)
     .endprolog
 
     /* Save WaitIrql as KSWITCH_FRAME::ApcBypass */
diff --git a/sdk/include/asm/kxamd64.inc b/sdk/include/asm/kxamd64.inc
index dccf8a2c409..61751f69529 100644
--- a/sdk/include/asm/kxamd64.inc
+++ b/sdk/include/asm/kxamd64.inc
@@ -12,7 +12,7 @@ MACRO(GENERATE_EXCEPTION_FRAME)
     /* Allocate a KEXCEPTION_FRAME on the stack */
     /* -8 because the last field is the return address */
     sub rsp, KEXCEPTION_FRAME_LENGTH - 8
-    .allocstack KEXCEPTION_FRAME_LENGTH - 8
+    .allocstack (KEXCEPTION_FRAME_LENGTH - 8)
 
     /* Save non-volatiles in KEXCEPTION_FRAME */
     mov [rsp + ExRbp], rbp