diff --git a/Outputs/CRT/Internals/Shaders/IntermediateShader.cpp b/Outputs/CRT/Internals/Shaders/IntermediateShader.cpp
index eab7369f9..fec05e14b 100644
--- a/Outputs/CRT/Internals/Shaders/IntermediateShader.cpp
+++ b/Outputs/CRT/Internals/Shaders/IntermediateShader.cpp
@@ -8,6 +8,7 @@
 
 #include "IntermediateShader.hpp"
 
+#include <cassert>
 #include <cstring>
 #include <sstream>
 
@@ -21,6 +22,9 @@ std::string IntermediateShader::get_input_name(Input input) {
 		case Input::OutputStart:			return "outputStart";
 		case Input::Ends:					return "ends";
 		case Input::PhaseTimeAndAmplitude:	return "phaseTimeAndAmplitude";
+
+		// Intended to be unreachable.
+		default: assert(false);
 	}
 }
 
diff --git a/Outputs/CRT/Internals/Shaders/OutputShader.cpp b/Outputs/CRT/Internals/Shaders/OutputShader.cpp
index 664703061..e16684731 100644
--- a/Outputs/CRT/Internals/Shaders/OutputShader.cpp
+++ b/Outputs/CRT/Internals/Shaders/OutputShader.cpp
@@ -8,6 +8,7 @@
 
 #include "OutputShader.hpp"
 
+#include <cassert>
 #include <cmath>
 #include <sstream>
 
@@ -17,6 +18,9 @@ std::string OutputShader::get_input_name(Input input) {
 	switch(input) {
 		case Input::Horizontal:	return "horizontal";
 		case Input::Vertical:	return "vertical";
+
+		// Intended to be unreachable.
+		default: assert(false);
 	}
 }