diff --git a/apps/su.cpp b/apps/su.cpp
index a0c95f6c..cd965894 100644
--- a/apps/su.cpp
+++ b/apps/su.cpp
@@ -14,10 +14,10 @@ void restore_terminal()
     ioctl(fileno(stdin), TCSETS, &orig);
 }
 
-void sigint_handler(int)
+void signal_handler(int signo)
 {
     restore_terminal();
-    raise(SIGINT);
+    raise(signo);
 }
 
 char* getpass()
@@ -41,10 +41,12 @@ char* getpass()
     }
 
     struct sigaction sa;
-    sa.sa_handler = sigint_handler;
+    sa.sa_handler = signal_handler;
     sigemptyset(&sa.sa_mask);
     sa.sa_flags = SA_RESETHAND;
     sigaction(SIGINT, &sa, NULL);
+    sigaction(SIGTERM, &sa, NULL);
+    sigaction(SIGQUIT, &sa, NULL);
 
     atexit(restore_terminal);