diff --git a/internal/ceres/suitesparse.cc b/internal/ceres/suitesparse.cc
index 200daa2..2018877 100644
--- a/internal/ceres/suitesparse.cc
+++ b/internal/ceres/suitesparse.cc
@@ -280,7 +280,7 @@
       *message = "CHOLMOD failure: Out of memory.";
       return LINEAR_SOLVER_FATAL_ERROR;
     case CHOLMOD_TOO_LARGE:
-      *message = "CHOLMOD failure: Integer overflow occured.";
+      *message = "CHOLMOD failure: Integer overflow occurred.";
       return LINEAR_SOLVER_FATAL_ERROR;
     case CHOLMOD_INVALID:
       *message = "CHOLMOD failure: Invalid input.";