diff --git a/pimd/Makefile.am b/pimd/Makefile.am
index 4aae637..ef5cffa 100644
--- a/pimd/Makefile.am
+++ b/pimd/Makefile.am
@@ -27,6 +27,8 @@
 # PIM_REPORT_RECV_IFINDEX_MISMATCH: Report sock/recv ifindex mismatch
 # PIM_ENFORCE_LOOPFREE_MFC: Refuse adding looping MFC entries
 # PIM_UNEXPECTED_KERNEL_UPCALL: Report unexpected kernel upcall
+# PIM_USE_QUAGGA_GETTIME: Prefer quagga_gettime
+# PIM_GETTIME_USE_GETTIMEOFDAY: Work-around improper monotonic clock
 
 PIM_DEFS =
 #PIM_DEFS += -DPIM_DEBUG_BYDEFAULT
@@ -37,6 +39,8 @@
 PIM_DEFS += -DPIM_USE_QUAGGA_INET_CHECKSUM
 PIM_DEFS += -DPIM_ENFORCE_LOOPFREE_MFC
 #PIM_DEFS += -DPIM_UNEXPECTED_KERNEL_UPCALL
+#PIM_DEFS += -DPIM_USE_QUAGGA_GETTIME
+PIM_DEFS += -DPIM_GETTIME_USE_GETTIMEOFDAY
 
 INCLUDES = @INCLUDES@ -I.. -I$(top_srcdir) -I$(top_srcdir)/lib
 DEFS = @DEFS@ -DSYSCONFDIR=\"$(sysconfdir)/\" $(PIM_DEFS)