diff --git a/src/mesa/drivers/dri/i915/i915_fragprog.c b/src/mesa/drivers/dri/i915/i915_fragprog.c
index 52f09a4..cfccef4 100644
--- a/src/mesa/drivers/dri/i915/i915_fragprog.c
+++ b/src/mesa/drivers/dri/i915/i915_fragprog.c
@@ -870,6 +870,8 @@ upload_program(struct i915_fragment_program *p)
 
       default:
          i915_program_error(p, "bad opcode");
+         _mesa_printf("Bad opcode = %d\n", inst->Opcode);
+         _mesa_print_program(&program->Base);
          return;
       }