diff --git a/internal/ceres/linear_solver.cc b/internal/ceres/linear_solver.cc
index 4bfb599..5ddfed0 100644
--- a/internal/ceres/linear_solver.cc
+++ b/internal/ceres/linear_solver.cc
@@ -81,7 +81,7 @@
     default:
       LOG(FATAL) << "Unknown linear solver type :"
                  << options.type;
-	  return NULL;  // MSVC doesn't understand that LOG(FATAL) never returns.
+      return NULL;  // MSVC doesn't understand that LOG(FATAL) never returns.
   }
 }