diff --git a/external/Makefile b/external/Makefile
index 78e5e193..f2061e9c 100644
--- a/external/Makefile
+++ b/external/Makefile
@@ -254,7 +254,7 @@ tor/Makefile: tor/configure
 	cp config.sub tor
 	cp config.guess tor
 	cd tor && \
-                CC="$(CC)" AR="$(AR)" RANLIB=$(RANLIB) CFLAGS="$(CFLAGS) -D_FORTIFY_SOURCE=2 -fwrapv -fno-strict-aliasing -fno-strict-overflow" LDFLAGS="$(LDFLAGS)" \
+                CC="$(CC)" AR="$(AR)" RANLIB=$(RANLIB) PKG_CONFIG_PATH="$(EXTERNAL_ROOT)/lib/pkgconfig" CFLAGS="$(CFLAGS) -D_FORTIFY_SOURCE=2 -fwrapv -fno-strict-aliasing -fno-strict-overflow" LDFLAGS="$(LDFLAGS)" \
                         LIBS="-L$(EXTERNAL_ROOT)/lib" CFLAGS="-I$(EXTERNAL_ROOT)/include -I$(EXTERNAL_ROOT)/include/event2" \
                         ./configure \
                                 --host=$(HOST) \