diff --git a/src/Pipeline/SpirvShader.cpp b/src/Pipeline/SpirvShader.cpp
index 4093ea8..08d0d25 100644
--- a/src/Pipeline/SpirvShader.cpp
+++ b/src/Pipeline/SpirvShader.cpp
@@ -195,7 +195,7 @@
 		}
 	}
 
-	void SpirvShader::ProcessInterfaceVariable(Object const &object)
+	void SpirvShader::ProcessInterfaceVariable(Object &object)
 	{
 		assert(object.storageClass == spv::StorageClassInput || object.storageClass == spv::StorageClassOutput);
 
@@ -236,6 +236,7 @@
 		}
 		else
 		{
+			object.kind = Object::Kind::InterfaceVariable;
 			PopulateInterface(&userDefinedInterface, resultId);
 		}
 	}
diff --git a/src/Pipeline/SpirvShader.hpp b/src/Pipeline/SpirvShader.hpp
index 9d3d843..52e9143 100644
--- a/src/Pipeline/SpirvShader.hpp
+++ b/src/Pipeline/SpirvShader.hpp
@@ -111,6 +111,7 @@
 				Unknown,        /* for paranoia -- if we get left with an object in this state, the module was broken */
 				Type,
 				Variable,
+				InterfaceVariable,
 				Constant,
 				Value,
 			} kind = Kind::Unknown;
@@ -247,7 +248,7 @@
 
 		uint32_t GetConstantInt(uint32_t id);
 
-		void ProcessInterfaceVariable(Object const &object);
+		void ProcessInterfaceVariable(Object &object);
 	};
 }