diff --git a/Kernel/API/POSIX/signal.h b/Kernel/API/POSIX/signal.h
index 4d9d680520..72ec996f24 100644
--- a/Kernel/API/POSIX/signal.h
+++ b/Kernel/API/POSIX/signal.h
@@ -6,6 +6,7 @@
 
 #pragma once
 
+#include <Kernel/API/POSIX/signal_numbers.h>
 #include <Kernel/API/POSIX/sys/types.h>
 
 #ifdef __cplusplus
diff --git a/Userland/Libraries/LibC/signal_numbers.h b/Kernel/API/POSIX/signal_numbers.h
similarity index 100%
rename from Userland/Libraries/LibC/signal_numbers.h
rename to Kernel/API/POSIX/signal_numbers.h
diff --git a/Kernel/Process.h b/Kernel/Process.h
index acdc1dcbc3..72f65b004c 100644
--- a/Kernel/Process.h
+++ b/Kernel/Process.h
@@ -38,7 +38,6 @@
 #include <Kernel/Thread.h>
 #include <Kernel/UnixTypes.h>
 #include <LibC/elf.h>
-#include <LibC/signal_numbers.h>
 
 namespace Kernel {
 
diff --git a/Kernel/TTY/MasterPTY.cpp b/Kernel/TTY/MasterPTY.cpp
index f8b9447540..5c4253a061 100644
--- a/Kernel/TTY/MasterPTY.cpp
+++ b/Kernel/TTY/MasterPTY.cpp
@@ -5,13 +5,13 @@
  */
 
 #include <Kernel/API/POSIX/errno.h>
+#include <Kernel/API/POSIX/signal_numbers.h>
 #include <Kernel/Debug.h>
 #include <Kernel/InterruptDisabler.h>
 #include <Kernel/Process.h>
 #include <Kernel/TTY/MasterPTY.h>
 #include <Kernel/TTY/PTYMultiplexer.h>
 #include <Kernel/TTY/SlavePTY.h>
-#include <LibC/signal_numbers.h>
 #include <LibC/sys/ioctl_numbers.h>
 
 namespace Kernel {
diff --git a/Kernel/TTY/TTY.cpp b/Kernel/TTY/TTY.cpp
index 25b6d71fc0..59c2b47981 100644
--- a/Kernel/TTY/TTY.cpp
+++ b/Kernel/TTY/TTY.cpp
@@ -8,11 +8,11 @@
 #include <AK/ScopeGuard.h>
 #include <AK/StringView.h>
 #include <Kernel/API/POSIX/errno.h>
+#include <Kernel/API/POSIX/signal_numbers.h>
 #include <Kernel/Debug.h>
 #include <Kernel/InterruptDisabler.h>
 #include <Kernel/Process.h>
 #include <Kernel/TTY/TTY.h>
-#include <LibC/signal_numbers.h>
 #include <LibC/sys/ioctl_numbers.h>
 #define TTYDEFCHARS
 #include <LibC/sys/ttydefaults.h>
diff --git a/Kernel/Thread.cpp b/Kernel/Thread.cpp
index f7fcf51fbd..3f892fad61 100644
--- a/Kernel/Thread.cpp
+++ b/Kernel/Thread.cpp
@@ -9,6 +9,7 @@
 #include <AK/StringBuilder.h>
 #include <AK/TemporaryChange.h>
 #include <AK/Time.h>
+#include <Kernel/API/POSIX/signal_numbers.h>
 #include <Kernel/Arch/SmapDisabler.h>
 #include <Kernel/Arch/TrapFrame.h>
 #include <Kernel/Debug.h>
@@ -29,7 +30,6 @@
 #include <Kernel/ThreadTracer.h>
 #include <Kernel/TimerQueue.h>
 #include <Kernel/kstdio.h>
-#include <LibC/signal_numbers.h>
 
 namespace Kernel {
 
diff --git a/Kernel/Thread.h b/Kernel/Thread.h
index 0bbbf4a16a..b8b2a55e1e 100644
--- a/Kernel/Thread.h
+++ b/Kernel/Thread.h
@@ -16,6 +16,7 @@
 #include <AK/Variant.h>
 #include <AK/Vector.h>
 #include <Kernel/API/POSIX/sched.h>
+#include <Kernel/API/POSIX/signal_numbers.h>
 #include <Kernel/Arch/RegisterState.h>
 #include <Kernel/Arch/ThreadRegisters.h>
 #include <Kernel/Debug.h>
@@ -31,7 +32,6 @@
 #include <Kernel/Memory/VirtualRange.h>
 #include <Kernel/UnixTypes.h>
 #include <LibC/fd_set.h>
-#include <LibC/signal_numbers.h>
 
 namespace Kernel {
 
diff --git a/Tests/Kernel/TestKernelAlarm.cpp b/Tests/Kernel/TestKernelAlarm.cpp
index 3d4fae0b1a..843d8ecaf8 100644
--- a/Tests/Kernel/TestKernelAlarm.cpp
+++ b/Tests/Kernel/TestKernelAlarm.cpp
@@ -9,7 +9,6 @@
 #include <LibCore/ElapsedTimer.h>
 #include <LibTest/TestCase.h>
 #include <signal.h>
-#include <signal_numbers.h>
 #include <unistd.h>
 
 class SuccessContext {
diff --git a/Userland/Libraries/LibC/signal.h b/Userland/Libraries/LibC/signal.h
index 87012a41a3..4aa0048733 100644
--- a/Userland/Libraries/LibC/signal.h
+++ b/Userland/Libraries/LibC/signal.h
@@ -9,7 +9,6 @@
 #include <Kernel/API/POSIX/signal.h>
 #include <Kernel/API/POSIX/ucontext.h>
 #include <bits/sighow.h>
-#include <signal_numbers.h>
 #include <sys/cdefs.h>
 #include <sys/types.h>
 
diff --git a/Userland/Libraries/LibCoredump/Reader.cpp b/Userland/Libraries/LibCoredump/Reader.cpp
index 9fd13b2b6a..a6cc8bc24e 100644
--- a/Userland/Libraries/LibCoredump/Reader.cpp
+++ b/Userland/Libraries/LibCoredump/Reader.cpp
@@ -13,7 +13,7 @@
 #include <LibCompress/Gzip.h>
 #include <LibCore/File.h>
 #include <LibCoredump/Reader.h>
-#include <signal_numbers.h>
+#include <signal.h>
 #include <string.h>
 #include <unistd.h>
 
diff --git a/Userland/Utilities/tt.cpp b/Userland/Utilities/tt.cpp
index e645b4da85..9e74ce7f7b 100644
--- a/Userland/Utilities/tt.cpp
+++ b/Userland/Utilities/tt.cpp
@@ -8,7 +8,7 @@
 #include <LibMain/Main.h>
 #include <errno.h>
 #include <pthread.h>
-#include <signal_numbers.h>
+#include <signal.h>
 #include <stdio.h>
 #include <string.h>
 #include <sys/mman.h>