diff --git a/project/vs2015/raylib/raylib.vcxproj b/project/vs2015/raylib/raylib.vcxproj
index da32df37c..97ce13e6d 100644
--- a/project/vs2015/raylib/raylib.vcxproj
+++ b/project/vs2015/raylib/raylib.vcxproj
@@ -92,6 +92,7 @@
WIN32;_DEBUG;_LIB;%(PreprocessorDefinitions);GRAPHICS_API_OPENGL_33;PLATFORM_DESKTOP
CompileAsC
$(SolutionDir)..\..\src\external\glfw\include;$(SolutionDir)..\..\release\include
+ MultiThreadedDebug
Windows
@@ -109,6 +110,7 @@
WIN32;_DEBUG;_LIB;%(PreprocessorDefinitions);GRAPHICS_API_OPENGL_33;PLATFORM_DESKTOP;BUILD_LIBTYPE_SHARED
CompileAsC
$(SolutionDir)..\..\src\external\glfw\include;$(SolutionDir)..\..\release\include
+ MultiThreadedDebug
Windows
@@ -128,6 +130,7 @@
WIN32;NDEBUG;_LIB;%(PreprocessorDefinitions);GRAPHICS_API_OPENGL_33;PLATFORM_DESKTOP
$(SolutionDir)..\..\src\external\glfw\include;$(SolutionDir)..\..\release\include
CompileAsC
+ MultiThreaded
Windows
@@ -146,6 +149,7 @@
WIN32;NDEBUG;_LIB;%(PreprocessorDefinitions);GRAPHICS_API_OPENGL_33;PLATFORM_DESKTOP;BUILD_LIBTYPE_SHARED
$(SolutionDir)..\..\src\external\glfw\include;$(SolutionDir)..\..\release\include
CompileAsC
+ MultiThreaded
Windows