diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3b193c8b..406f332b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -6,7 +6,7 @@ set(CMAKE_CXX_STANDARD_REQUIRED True)
 set(CATCH_ENABLE_REPRODUCIBLE_BUILD OFF CACHE INTERNAL "Turn off tests")
 #set(NES_WARNINGS "-Wall -Wextra -pedantic -Wno-null-character -Wno-dollar-in-identifier-extension -Werror=extra -Werror=exceptions -Werror=all -Werror=integer-overflow -Werror=return-type -Werror=return-stack-address -Werror=delete-non-virtual-dtor -Werror=deprecated -Werror=writable-strings -Werror=array-bounds -Werror=ignored-qualifiers -Werror=sign-compare -Wno-deprecated-copy-with-dtor -Wno-unused-variable -Wno-unused-but-set-variable -Wno-deprecated-declarations -Wno-invalid-offsetof ")
 
-#set(CMAKE_CXX_FLAGS "${NES_WARNINGS} -Wno-unused-parameter -fPIC -Wno-return-type -fno-omit-frame-pointer")
+set(CMAKE_CXX_FLAGS "-fpermissive -fno-omit-frame-pointer")
 
 
 include(cmake/macros.cmake)
diff --git a/nautilus-jit/include/IR/Operations/Operation.hpp b/nautilus-jit/include/IR/Operations/Operation.hpp
index b83d9640..5226d7f9 100644
--- a/nautilus-jit/include/IR/Operations/Operation.hpp
+++ b/nautilus-jit/include/IR/Operations/Operation.hpp
@@ -108,7 +108,7 @@ using OperationRawPtr = Operation*;
 
 namespace std {
 template<>
-struct std::hash<NES::Nautilus::IR::Operations::OperationIdentifier> {
+struct hash<NES::Nautilus::IR::Operations::OperationIdentifier> {
     std::size_t operator()(const NES::Nautilus::IR::Operations::OperationIdentifier& k) const {
         using std::hash;
         using std::size_t;