diff --git a/Makefile b/Makefile
index 227e094..db05dda 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,6 @@
 BUILD_DIR ?= $(CURDIR)/build
 PKG_DIR ?= $(CURDIR)/install
+TOOL_PATCH_DIR ?= $(CURDIR)/toolchain-patches
 
 ifdef ZERORISCY_PULP
 ARCH_FLAGS?=-march=IMXpulpslim
@@ -19,7 +20,6 @@ endif
 endif
 endif
 
-
 .PHONY: build
 
 PATCH_FILES = gcc.c gcse.c target.def builtins.c omp-low.c ira-color.c doc/tm.texi doc/tm.texi.in config/riscv/pulp_builtins.def
diff --git a/toolchain-patches/001-fix-gcc-6-compilation-issue.patch b/toolchain-patches/001-fix-gcc-6-compilation-issue.patch
index 3c7fbac..a54b9e1 100644
--- a/toolchain-patches/001-fix-gcc-6-compilation-issue.patch
+++ b/toolchain-patches/001-fix-gcc-6-compilation-issue.patch
@@ -126,4 +126,4 @@ index 5561fd1..e30e714 100644
 ++	gperf -o -C -E -k '1-6,$$' -j1 -D -N 'libc_name_p' -L C++ \
 + 		$(srcdir)/cp/cfns.gperf --output-file $(srcdir)/cp/cfns.h
 + 
-+ #
\ No newline at end of file
++ #