diff --git a/Changes b/Changes
index a34931b49..ea3ff5b84 100644
--- a/Changes
+++ b/Changes
@@ -13,6 +13,8 @@ indicates the contributor was also the author of the fix; Thanks!
 
 ****  Fix $sccanf from string, bug866. [David Pierce]
 
+****  Fix VM_PARALLEL_BUILDS broke in 3.868, bug870. [Hiroki Honda]
+
 
 * Verilator 3.868 2014-12-20
 
diff --git a/include/verilated.mk.in b/include/verilated.mk.in
index 44e386220..39a2804a2 100644
--- a/include/verilated.mk.in
+++ b/include/verilated.mk.in
@@ -153,7 +153,7 @@ VK_USER_OBJS   = $(addsuffix .o, $(VM_USER_CLASSES))
 
 VK_GLOBAL_OBJS = $(addsuffix .o, $(VM_GLOBAL_FAST) $(VM_GLOBAL_SLOW))
 
-ifneq ($(VM_PARALLEL_BUILDS),0)
+ifneq ($(VM_PARALLEL_BUILDS),1)
   # Fast building, all .cpp's in one fell swoop
   # This saves about 5 sec per module, but can be slower if only a little changes
   VK_OBJS += $(VM_PREFIX)__ALLcls.o   $(VM_PREFIX)__ALLsup.o