diff --git a/Makefile b/Makefile
index ce342ea..5d60819 100644
--- a/Makefile
+++ b/Makefile
@@ -1,8 +1,6 @@
-ERL_EI_INCLUDE:=$(shell  erl -eval 'io:format("~s", [code:lib_dir(erl_interface, include)])' -s init stop -noshell | head -1)
-ERL_EI_LIB:=$(shell  erl -eval 'io:format("~s", [code:lib_dir(erl_interface, lib)])' -s init stop -noshell | head -1)
 CFLAGS = -std=c99 -g -Wall -Werror
-CPPFLAGS = -I$(ERL_EI_INCLUDE)
-LDFLAGS = -L$(ERL_EI_LIB)
+CPPFLAGS = -I$(ERL_EI_INCLUDE_DIR)
+LDFLAGS = -L$(ERL_EI_LIBDIR)
 LDLIBS = -lpthread -lei -lm -lmagic
 PRIV = priv/
 RM = rm -Rf