diff --git a/src/mesa/drivers/dri/i965/brw_fs.cpp b/src/mesa/drivers/dri/i965/brw_fs.cpp
index 6bb195b4877..c3cbe0df618 100644
--- a/src/mesa/drivers/dri/i965/brw_fs.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs.cpp
@@ -3280,6 +3280,7 @@ static struct brw_reg brw_reg_from_fs_reg(fs_reg *reg)
 	 break;
       default:
 	 assert(!"not reached");
+	 brw_reg = brw_null_reg();
 	 break;
       }
       break;
@@ -3294,6 +3295,10 @@ static struct brw_reg brw_reg_from_fs_reg(fs_reg *reg)
       assert(!"not reached");
       brw_reg = brw_null_reg();
       break;
+   default:
+      assert(!"not reached");
+      brw_reg = brw_null_reg();
+      break;
    }
    if (reg->abs)
       brw_reg = brw_abs(brw_reg);