diff --git a/plugins/org.python.pydev.core/pysrc/_pydevd_sys_monitoring/pydevd_sys_monitoring_manager.py b/plugins/org.python.pydev.core/pysrc/_pydevd_sys_monitoring/pydevd_sys_monitoring_manager.py
deleted file mode 100644
index 2b0819428c..0000000000
--- a/plugins/org.python.pydev.core/pysrc/_pydevd_sys_monitoring/pydevd_sys_monitoring_manager.py
+++ /dev/null
@@ -1,25 +0,0 @@
-import sys
-DEBUGGER_ID = sys.monitoring.DEBUGGER_ID
-monitor = sys.monitoring
-
-
-class SysMonitoringManager:
-
-    DISABLE = monitor.DISABLE
-
-    def register_debugger(self):
-        monitor.use_tool_id(DEBUGGER_ID, 'pydevd')
-
-    def unregister_debugger(self):
-        if monitor.get_tool(DEBUGGER_ID) == 'pydevd':
-            monitor.free_tool_id(DEBUGGER_ID)
-
-    def trace_start_events(self, callback):
-        monitor.set_events(DEBUGGER_ID, monitor.events.PY_START | monitor.events.PY_RESUME)
-
-        # Only one callback is registered at a time and to unregister 'None' can be passed.
-        monitor.register_callback(DEBUGGER_ID, monitor.events.PY_START, callback)
-        monitor.register_callback(DEBUGGER_ID, monitor.events.PY_RESUME, callback)
-
-    def trace_line_events(self, code):
-        monitor.set_local_events(DEBUGGER_ID, code, monitor.events.LINE)
diff --git a/plugins/org.python.pydev.core/pysrc/pydevd.py b/plugins/org.python.pydev.core/pysrc/pydevd.py
index cd78b5c8c1..81805a9399 100644
--- a/plugins/org.python.pydev.core/pysrc/pydevd.py
+++ b/plugins/org.python.pydev.core/pysrc/pydevd.py
@@ -1942,7 +1942,7 @@ def set_suspend(self, thread, stop_reason, suspend_other_threads=False, is_pause
             # Suspend all except the current one (which we're currently suspending already).
             suspend_all_threads(self, except_thread=thread)
 
-        if is_pause and not suspend_other_threads:
+        if is_pause and not suspend_other_threads and USE_SYS_MONITORING:
             # When suspending other threads this is already called.
             pydevd_sys_monitoring.restart_events()