diff --git a/Makefile b/Makefile
index 2eba0398..5e9cbde1 100644
--- a/Makefile
+++ b/Makefile
@@ -21,7 +21,7 @@ export GIT_COMMIT := $(shell git rev-parse HEAD)
 SWIFT := "/usr/bin/swift"
 DESTDIR ?= /usr/local/
 ROOT_DIR := $(shell git rev-parse --show-toplevel)
-BUILD_BIN_DIR := $(shell $(SWIFT) build -c $(BUILD_CONFIGURATION) --show-bin-path)
+BUILD_BIN_DIR = $(shell $(SWIFT) build -c $(BUILD_CONFIGURATION) --show-bin-path)
 STAGING_DIR := bin/$(BUILD_CONFIGURATION)/staging/
 PKG_PATH := bin/$(BUILD_CONFIGURATION)/container-installer-unsigned.pkg
 DSYM_DIR := bin/$(BUILD_CONFIGURATION)/bundle/container-dSYM