diff --git a/make-bsd.mk b/make-bsd.mk
index 8234f2fdb..ce0b4dde1 100644
--- a/make-bsd.mk
+++ b/make-bsd.mk
@@ -1,6 +1,6 @@
 # This requires GNU make, which is typically "gmake" on BSD systems
 
-INCLUDES=-isystem ext
+INCLUDES=-isystem ext -Iext/prometheus-cpp-lite-1.0/core/include -Iext/prometheus-cpp-lite-1.0/simpleapi/include
 DEFS=
 LIBS=