diff --git a/toolkit/components/places/src/Makefile.in b/toolkit/components/places/src/Makefile.in
index 994eff339f7..546e4e3848a 100644
--- a/toolkit/components/places/src/Makefile.in
+++ b/toolkit/components/places/src/Makefile.in
@@ -73,6 +73,7 @@ REQUIRES = xpcom \
            js \
            nkcache \
            widget \
+           url-classifier \
            $(NULL)
 
 LOCAL_INCLUDES = -I$(srcdir)/../../build