diff --git a/internal/ceres/residual_block.cc b/internal/ceres/residual_block.cc
index 07afd6e..311d0a4 100644
--- a/internal/ceres/residual_block.cc
+++ b/internal/ceres/residual_block.cc
@@ -124,7 +124,7 @@
            "residual and jacobians that were requested or there was a "
            "non-finite "
            "value (nan/infinite)\n"  // NOLINT
-           "generated during the or jacobian computation. \n\n"
+           "generated during the jacobian computation. \n\n"
         << EvaluationToString(
                *this, parameters.data(), cost, residuals, eval_jacobians);
     return false;