diff --git a/Makefile b/Makefile
index 9236a11a..03569e85 100644
--- a/Makefile
+++ b/Makefile
@@ -126,7 +126,7 @@ endif
 ifeq ($(PLATFORM),Darwin)
 SYSROOT := $(shell xcodebuild -sdk macosx -version Path 2> $(NULL))
 ifeq ($(SYSROOT),)
-SYSROOT := $(shell ls /Library/Developer/CommandLineTools/SDKs/ | grep 10 | tail -n 1)
+SYSROOT := /Library/Developer/CommandLineTools/SDKs/$(shell ls /Library/Developer/CommandLineTools/SDKs/ | grep 10 | tail -n 1)
 endif
 ifeq ($(SYSROOT),)
 $(error Could not find a macOS SDK)