diff --git a/bmc/firmware-handler/lpc_handler.cpp b/bmc/firmware-handler/lpc_handler.cpp
index e3a5e08..c27bbe6 100644
--- a/bmc/firmware-handler/lpc_handler.cpp
+++ b/bmc/firmware-handler/lpc_handler.cpp
@@ -16,13 +16,36 @@
 
 #include "lpc_handler.hpp"
 
+#include "mapper_errors.hpp"
+
 #include <cstdint>
+#include <cstdio>
 #include <cstring>
 #include <vector>
 
 namespace ipmi_flash
 {
 
+bool LpcDataHandler::setInitializedAndReturn(bool value)
+{
+    if (value)
+    {
+        try
+        {
+            /* Try really opening the map. */
+            memory = mapper->open();
+        }
+        catch (const MapperException& e)
+        {
+            std::fprintf(stderr, "received mapper exception: %s\n", e.what());
+            return false;
+        }
+    }
+
+    initialized = value;
+    return value;
+}
+
 bool LpcDataHandler::open()
 {
     /* For the ASPEED LPC CTRL driver, the ioctl is required to set up the
diff --git a/bmc/firmware-handler/lpc_handler.hpp b/bmc/firmware-handler/lpc_handler.hpp
index cc04433..ec974ca 100644
--- a/bmc/firmware-handler/lpc_handler.hpp
+++ b/bmc/firmware-handler/lpc_handler.hpp
@@ -1,7 +1,6 @@
 #pragma once
 
 #include "data_handler.hpp"
-#include "mapper_errors.hpp"
 #include "window_hw_interface.hpp"
 
 #include <cstdint>
@@ -43,26 +42,7 @@
     std::vector<std::uint8_t> readMeta() override;
 
   private:
-    bool setInitializedAndReturn(bool value)
-    {
-        if (value)
-        {
-            try
-            {
-                /* Try really opening the map. */
-                memory = mapper->open();
-            }
-            catch (const MapperException& e)
-            {
-                std::fprintf(stderr, "received mapper exception: %s\n",
-                             e.what());
-                return false;
-            }
-        }
-
-        initialized = value;
-        return value;
-    }
+    bool setInitializedAndReturn(bool value);
 
     std::unique_ptr<HardwareMapperInterface> mapper;
     bool initialized;