diff --git a/base/applications/taskmgr/procpage.c b/base/applications/taskmgr/procpage.c
index e916cae8ee0..dd2825d2c91 100644
--- a/base/applications/taskmgr/procpage.c
+++ b/base/applications/taskmgr/procpage.c
@@ -400,6 +400,9 @@ void ProcessPageShowContextMenu(DWORD dwProcessId)
     DWORD        dwDebuggerSize;
     HKEY         hKey;
 
+    if (dwProcessId == 0)
+        return;
+
     memset(&si, 0, sizeof(SYSTEM_INFO));
 
     GetCursorPos(&pt);