diff --git a/build.sh b/build.sh
index 6e12701..704cc45 100755
--- a/build.sh
+++ b/build.sh
@@ -1,4 +1,4 @@
-rom_fp="$(date +%y%m%d).sophie"
+rom_fp="$(date +%Y%m%d).sophie"
 
 cd /android
 . build/envsetup.sh
@@ -6,7 +6,7 @@ lunch treble_arm64_bgN-userdebug
 
 RELAX_USES_LIBRARY_CHECK=true
 BUILD_NUMBER=$rom_fp
-make installclean
-make -j 16 systemimage
-make vndk-test-sepolicy
+m installclean
+m -j 16 systemimage
+m vndk-test-sepolicy
 xz -c -T16 $OUT/system.img > /android/system-$rom_fp.img.xz