diff --git a/linux/recipe.spec b/linux/recipe.spec
index 62d7a27..0d057ac 100644
--- a/linux/recipe.spec
+++ b/linux/recipe.spec
@@ -5,11 +5,13 @@ sources:
 	- config
 build-dependances:
 	- flex
+	- bison
+	- perl
 
 options:
 	# WARNING: this has to be the same environment variables used
 	#          during the creation of the config file
-	- make: -j5 CC=clang LD=ld.lld AR=llvm-ar NM=llvm-nm STRIP=llvm-strip OBJCOPY=llvm-objcopy OBJDUMP=llvm-objdump READELF=llvm-readelf HOSTCC=clang HOSTCXX=clang++ HOSTAR=llvm-ar HOSTLD=ld.lld
+	- make: CC=clang LD=ld.lld AR=llvm-ar NM=llvm-nm STRIP=llvm-strip OBJCOPY=llvm-objcopy OBJDUMP=llvm-objdump READELF=llvm-readelf HOSTCC=clang HOSTCXX=clang++ HOSTAR=llvm-ar HOSTLD=ld.lld
 
 @configure
 	cd '%{name}-%{version}'