diff --git a/main/acpica/APKBUILD b/main/acpica/APKBUILD
index 705c3f1c216..9bd218b6620 100644
--- a/main/acpica/APKBUILD
+++ b/main/acpica/APKBUILD
@@ -28,8 +28,12 @@ build() {
 		generate/unix/Makefile \
 		generate/unix/Makefile.config \
 		|| return 1
-
-	make BITSFLAG=-m32 || return 1
+	
+	case $CARCH in
+		x86_64) _bits=64;;
+		x86) _bits=32;;
+	esac
+	make BITSFLAG=-m$_bits || return 1
 }
 
 package() {