diff --git a/src/arch/alpha/process.cc b/src/arch/alpha/process.cc
index bcfe36270d..2c6f833096 100644
--- a/src/arch/alpha/process.cc
+++ b/src/arch/alpha/process.cc
@@ -52,7 +52,7 @@ AlphaProcess::AlphaProcess(ProcessParams *params, ObjectFile *objFile)
     : Process(params, new FuncPageTable(params->name, params->pid, PageBytes),
       objFile)
 {
-    fatal_if(!params->useArchPT, "Arch page tables not implemented.");
+    fatal_if(params->useArchPT, "Arch page tables not implemented.");
     Addr brk_point = objFile->dataBase() + objFile->dataSize() +
                      objFile->bssSize();
     brk_point = roundUp(brk_point, PageBytes);
diff --git a/src/arch/arm/process.cc b/src/arch/arm/process.cc
index 5daa54a1fe..aef714ed37 100644
--- a/src/arch/arm/process.cc
+++ b/src/arch/arm/process.cc
@@ -67,7 +67,7 @@ ArmProcess::ArmProcess(ProcessParams *params, ObjectFile *objFile,
               objFile),
               arch(_arch)
 {
-    fatal_if(!params->useArchPT, "Arch page tables not implemented.");
+    fatal_if(params->useArchPT, "Arch page tables not implemented.");
 }
 
 ArmProcess32::ArmProcess32(ProcessParams *params, ObjectFile *objFile,
diff --git a/src/arch/mips/process.cc b/src/arch/mips/process.cc
index 76f7e869c0..62ccd5afe4 100644
--- a/src/arch/mips/process.cc
+++ b/src/arch/mips/process.cc
@@ -53,7 +53,7 @@ MipsProcess::MipsProcess(ProcessParams *params, ObjectFile *objFile)
     : Process(params, new FuncPageTable(params->name, params->pid, PageBytes),
               objFile)
 {
-    fatal_if(!params->useArchPT, "Arch page tables not implemented.");
+    fatal_if(params->useArchPT, "Arch page tables not implemented.");
     // Set up stack. On MIPS, stack starts at the top of kuseg
     // user address space. MIPS stack grows down from here
     Addr stack_base = 0x7FFFFFFF;
diff --git a/src/arch/power/process.cc b/src/arch/power/process.cc
index 343cd4b4e0..22627efe5e 100644
--- a/src/arch/power/process.cc
+++ b/src/arch/power/process.cc
@@ -53,7 +53,7 @@ PowerProcess::PowerProcess(ProcessParams *params, ObjectFile *objFile)
     : Process(params, new FuncPageTable(params->name, params->pid, PageBytes),
               objFile)
 {
-    fatal_if(!params->useArchPT, "Arch page tables not implemented.");
+    fatal_if(params->useArchPT, "Arch page tables not implemented.");
     // Set up break point (Top of Heap)
     Addr brk_point = objFile->dataBase() + objFile->dataSize() +
                      objFile->bssSize();
diff --git a/src/arch/riscv/process.cc b/src/arch/riscv/process.cc
index 44b276a4bb..73df5f50d0 100644
--- a/src/arch/riscv/process.cc
+++ b/src/arch/riscv/process.cc
@@ -64,7 +64,7 @@ RiscvProcess::RiscvProcess(ProcessParams *params, ObjectFile *objFile) :
                                           PageBytes),
                 objFile)
 {
-    fatal_if(!params->useArchPT, "Arch page tables not implemented.");
+    fatal_if(params->useArchPT, "Arch page tables not implemented.");
     const Addr stack_base = 0x7FFFFFFFFFFFFFFFL;
     const Addr max_stack_size = 8 * 1024 * 1024;
     const Addr next_thread_stack_base = stack_base - max_stack_size;
diff --git a/src/arch/sparc/process.cc b/src/arch/sparc/process.cc
index 59ef5c4ac6..1fcb6cba34 100644
--- a/src/arch/sparc/process.cc
+++ b/src/arch/sparc/process.cc
@@ -60,7 +60,7 @@ SparcProcess::SparcProcess(ProcessParams *params, ObjectFile *objFile,
               objFile),
       StackBias(_StackBias)
 {
-    fatal_if(!params->useArchPT, "Arch page tables not implemented.");
+    fatal_if(params->useArchPT, "Arch page tables not implemented.");
     // Initialize these to 0s
     fillStart = 0;
     spillStart = 0;