diff --git a/Makefile b/Makefile
index 3d2957e..18d583d 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
 EX=reflex2q3
 CC=g++
-CFLAGS=-std=c++11 -I"include" -I"lib/Catch/single_include" -I"lib/cxxopts/include" -I"/usr/include/eigen3"
+CFLAGS=-std=c++11 -I"/mingw64/include/eigen3" -I"include" -I"lib/Catch/single_include" -I"lib/cxxopts/include" -I"/usr/include/eigen3"
 TESTEX=runtests
 
 all: main test