diff --git a/build.ninja b/build.ninja
index 8b1c38cf..5d707dc2 100644
--- a/build.ninja
+++ b/build.ninja
@@ -5,7 +5,7 @@ builddir = bin
 objdir = obj
 cxx = g++
 cxxflags = -std=c++11 -pedantic -pedantic-errors -Wextra -Wall -O2 -DNDEBUG
-incflags = -I"." -I"./include" -I"." =I"/usr/include/lua5.2" -I"./lua-5.2.2/src/" -I"./Catch/include/"
+incflags = -I"." -I"./include" -I"." -I"/usr/include/lua5.2" -I"./lua-5.2.2/src/" -I"./Catch/include/"
 linkflags = -static -L"./lib" -llua
 
 rule compile