diff --git a/src/arch/generic/SConscript b/src/arch/generic/SConscript
index 3ad4878ccc..fb144f9988 100644
--- a/src/arch/generic/SConscript
+++ b/src/arch/generic/SConscript
@@ -47,6 +47,8 @@ SimObject('BaseMMU.py')
 SimObject('BaseTLB.py')
 SimObject('ISACommon.py')
 
+DebugFlag('PageTableWalker',
+          "Page table walker state machine debugging")
 DebugFlag('TLB')
 
 if env['TARGET_ISA'] == 'null':
diff --git a/src/arch/riscv/SConscript b/src/arch/riscv/SConscript
index 03e382ceaa..291499c56d 100644
--- a/src/arch/riscv/SConscript
+++ b/src/arch/riscv/SConscript
@@ -75,8 +75,6 @@ if env['TARGET_ISA'] == 'riscv':
     DebugFlag('RiscvMisc')
     DebugFlag('TLBVerbose')
     DebugFlag('PMP')
-    DebugFlag('PageTableWalker', \
-              "Page table walker state machine debugging")
 
     # Add in files generated by the ISA description.
     ISADesc('isa/main.isa')
diff --git a/src/arch/x86/SConscript b/src/arch/x86/SConscript
index f790ec19b6..d7da2903bd 100644
--- a/src/arch/x86/SConscript
+++ b/src/arch/x86/SConscript
@@ -77,8 +77,6 @@ SimObject('X86TLB.py')
 
 DebugFlag('Faults', "Trace all faults/exceptions/traps")
 DebugFlag('LocalApic', "Local APIC debugging")
-DebugFlag('PageTableWalker', \
-          "Page table walker state machine debugging")
 DebugFlag('Decoder', "Decoder debug output")
 DebugFlag('X86', "Generic X86 ISA debugging")