diff --git a/src/lib/cothread/x86.c b/src/lib/cothread/x86.c
index d8f820b0665..2d083995b3d 100644
--- a/src/lib/cothread/x86.c
+++ b/src/lib/cothread/x86.c
@@ -69,7 +69,7 @@ cothread_t co_create(unsigned int size, void (*entrypoint)(void)) {
   size += 256; /* allocate additional space for storage */
   size &= ~15; /* align stack to 16-byte boundary */
 
-  if(handle = (cothread_t)malloc(size)) {
+  if((handle = (cothread_t)malloc(size))) {
     long *p = (long*)((char*)handle + size); /* seek to top of stack */
     *--p = (long)crash;                      /* crash if entrypoint returns */
     *--p = (long)entrypoint;                 /* start of function */
diff --git a/src/lib/lib.mak b/src/lib/lib.mak
index 8d49ecfe700..2e781ebbba0 100644
--- a/src/lib/lib.mak
+++ b/src/lib/lib.mak
@@ -210,4 +210,4 @@ $(OBJ)/libco.a: $(COTHREADOBJS)
 
 $(LIBOBJ)/cothread/%.o: $(LIBSRC)/cothread/%.c | $(OSPREBUILD)
 	@echo Compiling $<...
-	$(CC) -c -fomit-frame-pointer $< -o $@
+	$(CC) $(CDEFS) $(CCOMFLAGS) -c -fomit-frame-pointer $< -o $@