diff --git a/tools/generate_dtb/generate_dtb.sh b/tools/generate_dtb/generate_dtb.sh
index 20a08d0..84ba880 100755
--- a/tools/generate_dtb/generate_dtb.sh
+++ b/tools/generate_dtb/generate_dtb.sh
@@ -75,5 +75,5 @@
 	  -I spm/include
 	  -I include/lib"
 
-cpp -x c -P -o "$PREPROCESSED_DTS" "$COMBINED_DTS" ${INCLUDES} -DAARCH64
+cpp -x c -P -o "$PREPROCESSED_DTS" "$COMBINED_DTS" ${INCLUDES}
 dtc -I dts -O dtb "$PREPROCESSED_DTS" > "$GENERATED_DTB"