diff --git a/CMakeLists.txt b/CMakeLists.txt
index ca89118..0ea1be8 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -83,8 +83,6 @@ target_sources(${EXECUTABLE_NAME} PUBLIC
     "src/display_monitor.h"
     "src/draw.cc"
     "src/draw.h"
-    "src/electronic_registration.cc"
-    "src/electronic_registration.h"
     "src/elevator.cc"
     "src/elevator.h"
     "src/endgame.cc"
diff --git a/src/electronic_registration.cc b/src/electronic_registration.cc
deleted file mode 100644
index 9584db6..0000000
--- a/src/electronic_registration.cc
+++ /dev/null
@@ -1,50 +0,0 @@
-#include "electronic_registration.h"
-
-#ifdef _WIN32
-#define WIN32_LEAN_AND_MEAN
-#include <windows.h>
-#endif
-
-#include "platform_compat.h"
-#include "settings.h"
-
-namespace fallout {
-
-// 0x440DD0
-void runElectronicRegistration()
-{
-    int timesRun = settings.system.times_run;
-    if (timesRun > 0 && timesRun < 5) {
-#ifdef _WIN32
-        char path[COMPAT_MAX_PATH];
-        if (GetModuleFileNameA(NULL, path, sizeof(path)) != 0) {
-            char* pch = strrchr(path, '\\');
-            if (pch == NULL) {
-                pch = path;
-            }
-
-            strcpy(pch, "\\ereg");
-
-            STARTUPINFOA startupInfo;
-            memset(&startupInfo, 0, sizeof(startupInfo));
-            startupInfo.cb = sizeof(startupInfo);
-
-            PROCESS_INFORMATION processInfo;
-
-            // FIXME: Leaking processInfo.hProcess and processInfo.hThread:
-            // https://docs.microsoft.com/en-us/cpp/code-quality/c6335.
-            if (CreateProcessA("ereg\\reg32a.exe", NULL, NULL, NULL, FALSE, 0, NULL, path, &startupInfo, &processInfo)) {
-                WaitForSingleObject(processInfo.hProcess, INFINITE);
-            }
-        }
-#endif
-
-        settings.system.times_run = timesRun + 1;
-    } else {
-        if (timesRun == 0) {
-            settings.system.times_run = 1;
-        }
-    }
-}
-
-} // namespace fallout
diff --git a/src/electronic_registration.h b/src/electronic_registration.h
deleted file mode 100644
index 90dd5bc..0000000
--- a/src/electronic_registration.h
+++ /dev/null
@@ -1,10 +0,0 @@
-#ifndef ELECTRONIC_REGISTRATION_H
-#define ELECTRONIC_REGISTRATION_H
-
-namespace fallout {
-
-void runElectronicRegistration();
-
-} // namespace fallout
-
-#endif /* ELECTRONIC_REGISTRATION_H */
diff --git a/src/game.cc b/src/game.cc
index 60099ac..9fca014 100644
--- a/src/game.cc
+++ b/src/game.cc
@@ -25,7 +25,6 @@
 #include "debug.h"
 #include "display_monitor.h"
 #include "draw.h"
-#include "electronic_registration.h"
 #include "endgame.h"
 #include "font_manager.h"
 #include "game_dialog.h"
@@ -155,7 +154,6 @@ int gameInitWithOptions(const char* windowTitle, bool isMapper, int font, int a4
     // it should be initialized early in the process.
     messageListRepositoryInit();
 
-    runElectronicRegistration();
     programWindowSetTitle(windowTitle);
     _initWindow(1, a4);
     paletteInit();