diff --git a/compiler/Makefile b/compiler/Makefile
index 0bd7cc764..08b9234fb 100644
--- a/compiler/Makefile
+++ b/compiler/Makefile
@@ -19,7 +19,7 @@ HPX_VERSION?=1.7.1
 HPX_URL=https://github.com/STEllAR-GROUP/hpx/archive/refs/tags/$(HPX_VERSION).tar.gz
 HPX_TARBALL=$(shell pwd)/hpx-$(HPX_VERSION).tar.gz
 HPX_LOCAL_DIR=$(shell pwd)/hpx-$(HPX_VERSION)
-HPX_INSTALL_DIR?=$(HPX_LOCAL_DIR)
+HPX_INSTALL_DIR?=$(HPX_LOCAL_DIR)/build
 
 CONCRETE_CORE_FFI_VERSION?=0.2.0-rc.5
 ifeq ($(shell uname), Linux)