diff --git a/Source/Initialization/WarpXInit.H b/Source/Initialization/WarpXInit.H
index cb9de99c3bc..85e3b8d068e 100644
--- a/Source/Initialization/WarpXInit.H
+++ b/Source/Initialization/WarpXInit.H
@@ -17,14 +17,19 @@ namespace warpx::initialization
      * @param[in] argc number of arguments from main()
      * @param[in] argv argument strings from main()
      */
-    void initialize_external_libraries(int argc, char* argv[]);
+    void initialize_external_libraries (int argc, char* argv[]);
 
     /** Initializes, in the following order:
      * - the FFT library through the anyfft::cleanup() function in ablastr
      * - the AMReX library
      * - the MPI library through the mpi_finalize helper function in ablastr
      */
-    void finalize_external_libraries();
+    void finalize_external_libraries ();
+
+    /**
+     * Initializes the Warning manager in ablastr
+     */
+    void initialize_warning_manager ();
 
     /** Check that warpx.dims matches the binary name
     */
diff --git a/Source/Initialization/WarpXInit.cpp b/Source/Initialization/WarpXInit.cpp
index e9f3dc95a59..555bea52a7f 100644
--- a/Source/Initialization/WarpXInit.cpp
+++ b/Source/Initialization/WarpXInit.cpp
@@ -15,7 +15,9 @@
 
 #include <ablastr/math/fft/AnyFFT.H>
 #include <ablastr/parallelization/MPIInitHelpers.H>
+#include <ablastr/warn_manager/WarnManager.H>
 
+#include <optional>
 #include <string>
 
 void warpx::initialization::initialize_external_libraries(int argc, char* argv[])
@@ -25,13 +27,44 @@ void warpx::initialization::initialize_external_libraries(int argc, char* argv[]
     ablastr::math::anyfft::setup();
 }
 
-void warpx::initialization::finalize_external_libraries()
+void warpx::initialization::finalize_external_libraries ()
 {
     ablastr::math::anyfft::cleanup();
     amrex::Finalize();
     ablastr::parallelization::mpi_finalize();
 }
 
+void warpx::initialization::initialize_warning_manager ()
+{
+    const auto pp_warpx = amrex::ParmParse{"warpx"};
+
+    //"Synthetic" warning messages may be injected in the Warning Manager via
+    // inputfile for debug&testing purposes.
+    ablastr::warn_manager::GetWMInstance().debug_read_warnings_from_input(pp_warpx);
+
+    // Set the flag to control if WarpX has to emit a warning message as soon as a warning is recorded
+    bool always_warn_immediately = false;
+    pp_warpx.query("always_warn_immediately", always_warn_immediately);
+    ablastr::warn_manager::GetWMInstance().SetAlwaysWarnImmediately(always_warn_immediately);
+
+    // Set the WarnPriority threshold to decide if WarpX has to abort when a warning is recorded
+    if(std::string str_abort_on_warning_threshold;
+        pp_warpx.query("abort_on_warning_threshold", str_abort_on_warning_threshold)){
+        std::optional<ablastr::warn_manager::WarnPriority> abort_on_warning_threshold = std::nullopt;
+        if (str_abort_on_warning_threshold == "high") {
+            abort_on_warning_threshold = ablastr::warn_manager::WarnPriority::high;
+        } else if (str_abort_on_warning_threshold == "medium" ) {
+            abort_on_warning_threshold = ablastr::warn_manager::WarnPriority::medium;
+        } else if (str_abort_on_warning_threshold == "low") {
+            abort_on_warning_threshold = ablastr::warn_manager::WarnPriority::low;
+        } else {
+            WARPX_ABORT_WITH_MESSAGE(str_abort_on_warning_threshold
+                +"is not a valid option for warpx.abort_on_warning_threshold (use: low, medium or high)");
+        }
+        ablastr::warn_manager::GetWMInstance().SetAbortThreshold(abort_on_warning_threshold);
+    }
+}
+
 void warpx::initialization::check_dims()
 {
     // Ensure that geometry.dims is set properly.
diff --git a/Source/WarpX.cpp b/Source/WarpX.cpp
index 1e8e121dd5c..a17c7ff432e 100644
--- a/Source/WarpX.cpp
+++ b/Source/WarpX.cpp
@@ -246,6 +246,8 @@ WarpX::Finalize()
 
 WarpX::WarpX ()
 {
+    warpx::initialization::initialize_warning_manager();
+
     ReadParameters();
 
     BackwardCompatibility();
@@ -497,32 +499,6 @@ WarpX::ReadParameters ()
     {
         ParmParse const pp_warpx("warpx");
 
-        //"Synthetic" warning messages may be injected in the Warning Manager via
-        // inputfile for debug&testing purposes.
-        ablastr::warn_manager::GetWMInstance().debug_read_warnings_from_input(pp_warpx);
-
-        // Set the flag to control if WarpX has to emit a warning message as soon as a warning is recorded
-        bool always_warn_immediately = false;
-        pp_warpx.query("always_warn_immediately", always_warn_immediately);
-        ablastr::warn_manager::GetWMInstance().SetAlwaysWarnImmediately(always_warn_immediately);
-
-        // Set the WarnPriority threshold to decide if WarpX has to abort when a warning is recorded
-        if(std::string str_abort_on_warning_threshold;
-            pp_warpx.query("abort_on_warning_threshold", str_abort_on_warning_threshold)){
-            std::optional<ablastr::warn_manager::WarnPriority> abort_on_warning_threshold = std::nullopt;
-            if (str_abort_on_warning_threshold == "high") {
-                abort_on_warning_threshold = ablastr::warn_manager::WarnPriority::high;
-            } else if (str_abort_on_warning_threshold == "medium" ) {
-                abort_on_warning_threshold = ablastr::warn_manager::WarnPriority::medium;
-            } else if (str_abort_on_warning_threshold == "low") {
-                abort_on_warning_threshold = ablastr::warn_manager::WarnPriority::low;
-            } else {
-                WARPX_ABORT_WITH_MESSAGE(str_abort_on_warning_threshold
-                    +"is not a valid option for warpx.abort_on_warning_threshold (use: low, medium or high)");
-            }
-            ablastr::warn_manager::GetWMInstance().SetAbortThreshold(abort_on_warning_threshold);
-        }
-
         std::vector<int> numprocs_in;
         utils::parser::queryArrWithParser(
             pp_warpx, "numprocs", numprocs_in, 0, AMREX_SPACEDIM);