diff --git a/compiler/concrete-optimizer b/compiler/concrete-optimizer
index f19becac2..20833cefa 160000
--- a/compiler/concrete-optimizer
+++ b/compiler/concrete-optimizer
@@ -1 +1 @@
-Subproject commit f19becac21ebf9a0387c6d59287d3a59c72cef41
+Subproject commit 20833cefac32b14ab409a6588593573e42839bc1
diff --git a/compiler/include/concretelang/Support/V0Parameters.h b/compiler/include/concretelang/Support/V0Parameters.h
index 3e810942e..78b3ca0a2 100644
--- a/compiler/include/concretelang/Support/V0Parameters.h
+++ b/compiler/include/concretelang/Support/V0Parameters.h
@@ -24,6 +24,8 @@ constexpr uint DEFAULT_FALLBACK_LOG_NORM_WOPPBS = 8;
 constexpr bool DEFAULT_DISPLAY = false;
 constexpr bool DEFAULT_STRATEGY_V0 = false;
 constexpr bool DEFAULT_USE_GPU_CONSTRAINTS = false;
+constexpr concrete_optimizer::Encoding DEFAULT_ENCODING =
+    concrete_optimizer::Encoding::Auto;
 
 struct Config {
   double p_error;
@@ -33,15 +35,19 @@ struct Config {
   std::uint64_t security;
   double fallback_log_norm_woppbs;
   bool use_gpu_constraints;
+  concrete_optimizer::Encoding encoding;
 };
 
-constexpr Config DEFAULT_CONFIG = {UNSPECIFIED_P_ERROR,
-                                   NO_GLOBAL_P_ERROR,
-                                   DEFAULT_DISPLAY,
-                                   DEFAULT_STRATEGY_V0,
-                                   DEFAULT_SECURITY,
-                                   DEFAULT_FALLBACK_LOG_NORM_WOPPBS,
-                                   DEFAULT_USE_GPU_CONSTRAINTS};
+constexpr Config DEFAULT_CONFIG = {
+    UNSPECIFIED_P_ERROR,
+    NO_GLOBAL_P_ERROR,
+    DEFAULT_DISPLAY,
+    DEFAULT_STRATEGY_V0,
+    DEFAULT_SECURITY,
+    DEFAULT_FALLBACK_LOG_NORM_WOPPBS,
+    DEFAULT_USE_GPU_CONSTRAINTS,
+    DEFAULT_ENCODING,
+};
 
 using Dag = rust::Box<concrete_optimizer::OperationDag>;
 using Solution = concrete_optimizer::v0::Solution;
diff --git a/compiler/lib/Support/V0Parameters.cpp b/compiler/lib/Support/V0Parameters.cpp
index e96fce324..1245ec419 100644
--- a/compiler/lib/Support/V0Parameters.cpp
+++ b/compiler/lib/Support/V0Parameters.cpp
@@ -24,11 +24,13 @@ namespace mlir {
 namespace concretelang {
 
 concrete_optimizer::Options options_from_config(optimizer::Config config) {
-  concrete_optimizer::Options options;
-  options.security_level = config.security;
-  options.maximum_acceptable_error_probability = config.p_error;
-  options.default_log_norm2_woppbs = config.fallback_log_norm_woppbs;
-  options.use_gpu_constraints = config.use_gpu_constraints;
+  concrete_optimizer::Options options = {
+      /* .security_level = */ config.security,
+      /* .maximum_acceptable_error_probability = */ config.p_error,
+      /* .default_log_norm2_woppbs = */ config.fallback_log_norm_woppbs,
+      /* .use_gpu_constraints = */ config.use_gpu_constraints,
+      /* .encoding = */ config.encoding,
+  };
   return options;
 }
 
diff --git a/compiler/src/main.cpp b/compiler/src/main.cpp
index 4dfbe16ba..f92af6ca9 100644
--- a/compiler/src/main.cpp
+++ b/compiler/src/main.cpp
@@ -223,6 +223,16 @@ llvm::cl::opt<double> fallbackLogNormWoppbs(
     llvm::cl::init(mlir::concretelang::optimizer::DEFAULT_CONFIG
                        .fallback_log_norm_woppbs));
 
+llvm::cl::opt<concrete_optimizer::Encoding> optimizerEncoding(
+    "force-encoding", llvm::cl::desc("Choose cyphertext encoding."),
+    llvm::cl::init(mlir::concretelang::optimizer::DEFAULT_CONFIG.encoding),
+    llvm::cl::values(clEnumValN(concrete_optimizer::Encoding::Auto, "auto",
+                                "Pick the best [default]")),
+    llvm::cl::values(clEnumValN(concrete_optimizer::Encoding::Native, "native",
+                                "native")),
+    llvm::cl::values(clEnumValN(concrete_optimizer::Encoding::Native, "crt",
+                                "Chineese Reminder Theorem representation")));
+
 llvm::cl::list<int64_t> fhelinalgTileSizes(
     "fhelinalg-tile-sizes",
     llvm::cl::desc(
@@ -371,6 +381,7 @@ cmdlineCompilationOptions() {
   options.optimizerConfig.p_error = cmdline::pbsErrorProbability;
   options.optimizerConfig.display = cmdline::displayOptimizerChoice;
   options.optimizerConfig.strategy_v0 = cmdline::optimizerV0;
+  options.optimizerConfig.encoding = cmdline::optimizerEncoding;
 
   if (!std::isnan(options.optimizerConfig.global_p_error) &&
       options.optimizerConfig.strategy_v0) {