diff --git a/src/Shader.cpp b/src/Shader.cpp
index 9ca2e85..cdcd66e 100644
--- a/src/Shader.cpp
+++ b/src/Shader.cpp
@@ -9,7 +9,7 @@ Shader::compile_sources(const std::vector<std::string>& sources,
                                    const std::vector<std::string>& files,
                                    const std::string& entryPoint,
                                    std::vector<std::pair<std::string,std::string>> definitions,
-                                   const TBuiltInResource resources) {
+                                   const TBuiltInResource& resources) {
 
     // Initialize glslang library.
     glslang::InitializeProcess();
@@ -90,7 +90,7 @@ std::vector<uint32_t>
 Shader::compile_source(const std::string& source,
         const std::string& entryPoint,
         std::vector<std::pair<std::string,std::string>> definitions,
-        const TBuiltInResource resource) {
+        const TBuiltInResource& resource) {
     return compile_sources({source}, std::vector<std::string>({}), entryPoint, definitions, resource);
 }
 
diff --git a/src/include/kompute/Shader.hpp b/src/include/kompute/Shader.hpp
index 5f840b0..bb76dbb 100644
--- a/src/include/kompute/Shader.hpp
+++ b/src/include/kompute/Shader.hpp
@@ -6,7 +6,7 @@
 
 #include <glslang/Include/ResourceLimits.h>
 #include <glslang/Public/ShaderLang.h>
-#include <glslang/SPIRV/GlslangToSpv.h>
+#include <SPIRV/GlslangToSpv.h>
 
 #include "kompute/Core.hpp"
 
@@ -36,7 +36,7 @@ public:
             const std::vector<std::string>& files = {},
             const std::string& entryPoint = "main",
             std::vector<std::pair<std::string,std::string>> definitions = {},
-            const TBuiltInResource resources = defaultResource);
+            const TBuiltInResource& resources = defaultResource);
 
     /**
      * Compile a single glslang source from string value. Currently this function
@@ -55,10 +55,12 @@ public:
             const std::string& source,
             const std::string& entryPoint = "main",
             std::vector<std::pair<std::string,std::string>> definitions = {},
-            const TBuiltInResource resources = defaultResource);
+            const TBuiltInResource& resources = defaultResource);
 
 private:
     // The default resource limit for the GLSL compiler, can be overwritten
+    // Has been adobted by:
+    // https://github.com/KhronosGroup/glslang/blob/master/StandAlone/ResourceLimits.cpp
     static constexpr TBuiltInResource defaultResource = {
     /* .MaxLights = */ 0,
     /* .MaxClipPlanes = */ 0,