diff --git a/src/mesa/drivers/dri/r300/compiler/r500_fragprog_emit.c b/src/mesa/drivers/dri/r300/compiler/r500_fragprog_emit.c
index 710cae7..a02677a 100644
--- a/src/mesa/drivers/dri/r300/compiler/r500_fragprog_emit.c
+++ b/src/mesa/drivers/dri/r300/compiler/r500_fragprog_emit.c
@@ -469,7 +469,12 @@ void r500BuildFragmentProgramHwCode(struct r300_fragment_program_compiler *compi
 	if (compiler->Base.Error)
 		return;
 
+#if 0
 	assert(code->inst_end >= 0);
+#else
+	if (code->inst_end < 0)
+		_mesa_problem(NULL, "see bug https://bugs.freedesktop.org/show_bug.cgi?id=26954");
+#endif
 
 	if ((code->inst[code->inst_end].inst0 & R500_INST_TYPE_MASK) != R500_INST_TYPE_OUT) {
 		/* This may happen when dead-code elimination is disabled or