diff --git a/src/mzscheme/gc2/newgc.c b/src/mzscheme/gc2/newgc.c
index 58e75906b5..d5aaf409c2 100644
--- a/src/mzscheme/gc2/newgc.c
+++ b/src/mzscheme/gc2/newgc.c
@@ -593,7 +593,6 @@ inline static void resize_gen0(unsigned long new_size)
          better to zero out on allocation, instead:
          better locality, and we don't have to zero
          for atomic allocations. */
-      bzero(PPTR(work) + HEADER_SIZEW, work->size - gcWORDS_TO_BYTES(HEADER_SIZEW)); /* REMOVEME */
       alloced_size += GEN0_PAGE_SIZE;
       work->size = HEADER_SIZEB;
       prev = work;
diff --git a/src/mzscheme/gc2/sighand.c b/src/mzscheme/gc2/sighand.c
index 6dc3571469..7f9239fb7b 100644
--- a/src/mzscheme/gc2/sighand.c
+++ b/src/mzscheme/gc2/sighand.c
@@ -99,8 +99,9 @@ static void initialize_signal_handler()
     memset(&act, sizeof(sigaction), 0);
     act.sa_sigaction = fault_handler;
     sigemptyset(&act.sa_mask);
-    sigaddset(&act.sa_mask, SIGCHLD); /* needed by MzScheme, since SIGCHLD handling 
-                                         may trigger a write barrier */
+    /* In MzScheme, SIGCHLD or SIGINT handling may trigger a write barrier: */
+    sigaddset(&act.sa_mask, SIGINT);
+    sigaddset(&act.sa_mask, SIGCHLD);
     act.sa_flags = SA_SIGINFO;
     sigaction(USE_SIGACTON_SIGNAL_KIND, &act, &oact);
   }