diff --git a/neo/renderer/Material.cpp b/neo/renderer/Material.cpp
index f0048050..2655a1b4 100644
--- a/neo/renderer/Material.cpp
+++ b/neo/renderer/Material.cpp
@@ -2830,6 +2830,11 @@ void idMaterial::EvaluateRegisters( float *registers, const float shaderParms[MA
 	op = ops;
 	for ( i = 0 ; i < numOps ; i++, op++ ) {
 		switch( op->opType ) {
+#ifdef PREY
+		case OP_TYPE_FRAGMENTPROGRAMS:
+			registers[op->c] = glConfig.ARBFragmentProgramAvailable;
+			break;
+#endif
 		case OP_TYPE_ADD:
 			registers[op->c] = registers[op->a] + registers[op->b];
 			break;