diff --git a/AK/LsanSuppressions.h b/AK/LsanSuppressions.h
index 4049f7d45424c..a4f5b53c65f54 100644
--- a/AK/LsanSuppressions.h
+++ b/AK/LsanSuppressions.h
@@ -8,9 +8,10 @@
 
 #include <AK/Platform.h>
 
-#ifdef HAS_ADDRESS_SANITIZER
+#if defined(HAS_ADDRESS_SANITIZER)
+#    include <sanitizer/lsan_interface.h>
+
 extern "C" {
-char const* __lsan_default_suppressions();
 char const* __lsan_default_suppressions()
 {
     // Both Skia and Chromium suppress false positive FontConfig leaks
@@ -20,3 +21,14 @@ char const* __lsan_default_suppressions()
 }
 }
 #endif
+
+namespace AK {
+
+inline void perform_leak_sanitizer_checks()
+{
+#if defined(HAS_ADDRESS_SANITIZER)
+    __lsan_do_leak_check();
+#endif
+}
+
+}
diff --git a/Libraries/LibMain/Main.cpp b/Libraries/LibMain/Main.cpp
index 270b88e7e7ba9..15ffa97fa178e 100644
--- a/Libraries/LibMain/Main.cpp
+++ b/Libraries/LibMain/Main.cpp
@@ -5,6 +5,8 @@
  */
 
 #include <AK/Format.h>
+#include <AK/LsanSuppressions.h>
+#include <AK/ScopeGuard.h>
 #include <AK/StringView.h>
 #include <AK/Vector.h>
 #include <LibMain/Main.h>
@@ -41,10 +43,14 @@ int main(int argc, char** argv)
         .argv = argv,
         .strings = arguments.span(),
     });
+
+    ScopeGuard guard { []() { AK::perform_leak_sanitizer_checks(); } };
+
     if (result.is_error()) {
         auto error = result.release_error();
         warnln("\033[31;1mRuntime error\033[0m: {}", error);
         return Main::return_code_for_errors();
     }
+
     return result.value();
 }