diff --git a/scripts/dtc/Makefile b/scripts/dtc/Makefile
index 53f94e5a48d..6f309b37e08 100644
--- a/scripts/dtc/Makefile
+++ b/scripts/dtc/Makefile
@@ -17,7 +17,7 @@ fdtoverlay-objs	:= $(libfdt) fdtoverlay.o util.o
 # Source files need to get at the userspace version of libfdt_env.h to compile
 HOST_EXTRACFLAGS := -I$(srctree)/$(src)/libfdt
 
-ifeq ($(wildcard /usr/include/yaml.h),)
+ifeq ($(wildcard $(PKG_CONFIG_SYSROOT_DIR)/usr/include/yaml.h),)
 HOST_EXTRACFLAGS += -DNO_YAML
 else
 dtc-objs	+= yamltree.o