diff --git a/mozilla/profile/src/nsProfileAccess.cpp b/mozilla/profile/src/nsProfileAccess.cpp
index 5d5a120dac1..ba9af5458c9 100644
--- a/mozilla/profile/src/nsProfileAccess.cpp
+++ b/mozilla/profile/src/nsProfileAccess.cpp
@@ -1744,17 +1744,7 @@ static struct sigaction SIGABRT_oldact;
 static struct sigaction SIGSEGV_oldact;
 static struct sigaction SIGTERM_oldact;
 
-#ifdef HAVE_SIGINFO_T
-// There is no standard type definition for the type of sa_sigaction.
-extern "C" {
-typedef void (*my_sigaction_t)(int, siginfo_t*, void*);
-}
-
-void nsProfileLock::FatalSignalHandler(int signo, siginfo_t* info,
-                                       void* context)
-#else
 void nsProfileLock::FatalSignalHandler(int signo)
-#endif
 {
     // Remove any locks still held.
     RemovePidLockFiles();
@@ -1789,25 +1779,12 @@ void nsProfileLock::FatalSignalHandler(int signo)
         break;
     }
 
-    if (oldact) {
-#ifdef HAVE_SIGINFO_T
-        if (oldact->sa_flags & SA_SIGINFO) {
-            if (oldact->sa_sigaction &&
-                oldact->sa_sigaction != (my_sigaction_t) SIG_DFL &&
-                oldact->sa_sigaction != (my_sigaction_t) SIG_IGN)
-            {
-                oldact->sa_sigaction(signo, info, context);
-            }
-        } else
-#endif
-        {
-            if (oldact->sa_handler &&
-                oldact->sa_handler != SIG_DFL &&
-                oldact->sa_handler != SIG_IGN)
-            {
-                oldact->sa_handler(signo);
-            }
-        }
+    if (oldact &&
+        oldact->sa_handler &&
+        oldact->sa_handler != SIG_DFL &&
+        oldact->sa_handler != SIG_IGN)
+    {
+        oldact->sa_handler(signo);
     }
 
     // Backstop exit call, just in case.
@@ -2153,41 +2130,19 @@ nsresult nsProfileLock::Lock(nsILocalFile* aFile)
                 // Don't arm a handler if the signal is being ignored, e.g.,
                 // because mozilla is run via nohup.
                 struct sigaction act, oldact;
-#ifdef HAVE_SIGINFO_T
-                act.sa_sigaction = FatalSignalHandler;
-                act.sa_flags = SA_SIGINFO;
-#else
                 act.sa_handler = FatalSignalHandler;
                 act.sa_flags = 0;
-#endif
                 sigfillset(&act.sa_mask);
 
-#ifdef HAVE_SIGINFO_T
-
 #define CATCH_SIGNAL(signame)                                                 \
     PR_BEGIN_MACRO                                                            \
         if (sigaction(signame, NULL, &oldact) == 0 &&                         \
-            ((oldact.sa_flags & SA_SIGINFO) ?                                 \
-               (oldact.sa_sigaction != (my_sigaction_t) SIG_IGN) :            \
-               (oldact.sa_handler != SIG_IGN)))                               \
+            oldact.sa_handler != SIG_IGN)                                     \
         {                                                                     \
             sigaction(signame, &act, &signame##_oldact);                      \
         }                                                                     \
     PR_END_MACRO
 
-#else
-
-#define CATCH_SIGNAL(signame)                                                 \
-    PR_BEGIN_MACRO                                                            \
-        if (sigaction(signame, NULL, &oldact) == 0 &&                         \
-            (oldact.sa_handler != SIG_IGN))                                   \
-        {                                                                     \
-            sigaction(signame, &act, &signame##_oldact);                      \
-        }                                                                     \
-    PR_END_MACRO
-
-#endif
-
                 CATCH_SIGNAL(SIGHUP);
                 CATCH_SIGNAL(SIGINT);
                 CATCH_SIGNAL(SIGQUIT);
diff --git a/mozilla/profile/src/nsProfileAccess.h b/mozilla/profile/src/nsProfileAccess.h
index 08489ef7801..d50123f8b16 100644
--- a/mozilla/profile/src/nsProfileAccess.h
+++ b/mozilla/profile/src/nsProfileAccess.h
@@ -33,10 +33,6 @@
 #include <windows.h>
 #endif
 
-#ifdef XP_UNIX
-#include <signal.h>
-#endif
-
 class ProfileStruct
 {    
 public:
@@ -207,12 +203,7 @@ private:
     LHANDLE                 mLockFileHandle;
 #elif defined (XP_UNIX)
     static void             RemovePidLockFiles();
-#ifdef HAVE_SIGINFO_T
-    static void             FatalSignalHandler(int signo, siginfo_t* info,
-                                               void* context);
-#else
     static void             FatalSignalHandler(int signo);
-#endif
     static PRCList          mPidLockList;
     char*                   mPidLockFileName;
     int                     mLockFileDesc;