diff --git a/External/FEXCore/Source/Interface/IR/Passes/IRValidation.cpp b/External/FEXCore/Source/Interface/IR/Passes/IRValidation.cpp
index ac68ca69c..e1f86dd12 100644
--- a/External/FEXCore/Source/Interface/IR/Passes/IRValidation.cpp
+++ b/External/FEXCore/Source/Interface/IR/Passes/IRValidation.cpp
@@ -11,7 +11,7 @@ $end_info$
 #include "Interface/Core/OpcodeDispatcher.h"
 #include "Common/BitSet.h"
 
-#include <iostream>
+#include <sstream>
 
 namespace {
   struct BlockInfo {
@@ -279,7 +279,7 @@ bool IRValidation::Run(IREmitter *IREmit) {
       Out << "Warnings:" << std::endl << Warnings.str() << std::endl;
     }
 
-    LogMan::Msg::E("%s", Out.str().c_str());
+    LogMan::Msg::EFmt("{}", Out.str());
   }
 
   return false;
diff --git a/External/FEXCore/Source/Interface/IR/Passes/PhiValidation.cpp b/External/FEXCore/Source/Interface/IR/Passes/PhiValidation.cpp
index c56f239bf..e20102468 100644
--- a/External/FEXCore/Source/Interface/IR/Passes/PhiValidation.cpp
+++ b/External/FEXCore/Source/Interface/IR/Passes/PhiValidation.cpp
@@ -8,7 +8,7 @@ $end_info$
 #include "Interface/IR/PassManager.h"
 #include "Interface/Core/OpcodeDispatcher.h"
 
-#include <iostream>
+#include <sstream>
 
 namespace FEXCore::IR::Validation {
 
@@ -59,7 +59,7 @@ bool PhiValidation::Run(IREmitter *IREmit) {
 
     Out << "Errors:" << std::endl << Errors.str() << std::endl;
 
-    LogMan::Msg::E(Out.str().c_str());
+    LogMan::Msg::EFmt("{}", Out.str());
   }
 
 
diff --git a/External/FEXCore/Source/Interface/IR/Passes/ValueDominanceValidation.cpp b/External/FEXCore/Source/Interface/IR/Passes/ValueDominanceValidation.cpp
index 2f7a13445..b6fb9927c 100644
--- a/External/FEXCore/Source/Interface/IR/Passes/ValueDominanceValidation.cpp
+++ b/External/FEXCore/Source/Interface/IR/Passes/ValueDominanceValidation.cpp
@@ -8,9 +8,9 @@ $end_info$
 #include "Interface/IR/PassManager.h"
 #include "Interface/Core/OpcodeDispatcher.h"
 
-#include <iostream>
 #include <map>
 #include <list>
+#include <sstream>
 #include <unordered_map>
 
 namespace {
@@ -206,7 +206,7 @@ bool ValueDominanceValidation::Run(IREmitter *IREmit) {
       Out << "Warnings:" << std::endl << Warnings.str() << std::endl;
     }
 
-    LogMan::Msg::E(Out.str().c_str());
+    LogMan::Msg::EFmt("{}", Out.str());
   }
 
   return false;