diff --git a/CHANGELOG.md b/CHANGELOG.md
index c6f3564..89eeac2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,7 @@
 # 1.1.5 (pre-release)
 - Changed the temporary directory path to user's cache directory, which is more appropriate for storing cache files and avoids issues with unintended cleanup.
 - Fixed the isssue where extra metadata information was not being saved to M4B files when they have no chapters, ensuring that all metadata is correctly written to the output file.
+- Fixed sleep prevention process not ending if program exited using Ctrl+C or kill.
 
 # 1.1.4
 - Fixed extra metadata information not being saved to M4B files, ensuring that all metadata is correctly written to the output file.
diff --git a/abogen/main.py b/abogen/main.py
index e8c98d0..21e9db5 100644
--- a/abogen/main.py
+++ b/abogen/main.py
@@ -3,6 +3,7 @@ import os
 import sys
 import platform
 import atexit
+import signal
 from PyQt5.QtWidgets import QApplication
 from PyQt5.QtGui import QIcon
 from PyQt5.QtCore import qInstallMessageHandler, QtMsgType
@@ -31,6 +32,14 @@ os.environ["MIOPEN_CONV_PRECISE_ROCM_TUNING"] = "0"
 # Reset sleep states
 atexit.register(prevent_sleep_end)
 
+# Also handle signals (Ctrl+C, kill, etc.)
+def _cleanup_sleep(signum, frame):
+    prevent_sleep_end()
+    sys.exit(0)
+
+signal.signal(signal.SIGINT, _cleanup_sleep)
+signal.signal(signal.SIGTERM, _cleanup_sleep)
+
 # Ensure sys.stdout and sys.stderr are valid in GUI mode
 if sys.stdout is None:
     sys.stdout = open(os.devnull, "w")
@@ -41,7 +50,6 @@ if sys.stderr is None:
 if platform.system() == "Darwin" and platform.processor() == "arm":
     os.environ["PYTORCH_ENABLE_MPS_FALLBACK"] = "1"
 
-
 # Custom message handler to filter out specific Qt warnings
 def qt_message_handler(mode, context, message):
     if "Wayland does not support QWindow::requestActivate()" in message: