diff --git a/AK/Assertions.h b/AK/Assertions.h
index bced43f658..7e5793f4df 100644
--- a/AK/Assertions.h
+++ b/AK/Assertions.h
@@ -15,10 +15,3 @@
 
 #endif
 
-namespace AK {
-
-inline void not_implemented() { ASSERT(false); }
-
-}
-
-using AK::not_implemented;
diff --git a/Kernel/TTY/VirtualConsole.cpp b/Kernel/TTY/VirtualConsole.cpp
index 36566cf418..78d72f1421 100644
--- a/Kernel/TTY/VirtualConsole.cpp
+++ b/Kernel/TTY/VirtualConsole.cpp
@@ -310,11 +310,11 @@ void VirtualConsole::escape$J(const Vector<unsigned>& params)
     switch (mode) {
     case 0:
         // FIXME: Clear from cursor to end of screen.
-        not_implemented();
+        ASSERT_NOT_REACHED();
         break;
     case 1:
         // FIXME: Clear from cursor to beginning of screen.
-        not_implemented();
+        ASSERT_NOT_REACHED();
         break;
     case 2:
         clear();