diff --git a/src/RIGID/fix_rigid.cpp b/src/RIGID/fix_rigid.cpp
index a963e07a40..2f2f84570e 100644
--- a/src/RIGID/fix_rigid.cpp
+++ b/src/RIGID/fix_rigid.cpp
@@ -2006,7 +2006,7 @@ void FixRigid::setup_bodies_static()
 
   MPI_Allreduce(sum[0],all[0],6*nbody,MPI_DOUBLE,MPI_SUM,world);
 
-  // error check that re-computed momemts of inertia match diagonalized ones
+  // error check that re-computed moments of inertia match diagonalized ones
   // do not do test for bodies with params read from infile
 
   double norm;
diff --git a/src/RIGID/fix_rigid_small.cpp b/src/RIGID/fix_rigid_small.cpp
index 36dfc1bdea..bc2cd04bcc 100644
--- a/src/RIGID/fix_rigid_small.cpp
+++ b/src/RIGID/fix_rigid_small.cpp
@@ -2192,7 +2192,7 @@ void FixRigidSmall::setup_bodies_static()
   commflag = ITENSOR;
   comm->reverse_comm_fix(this,6);
 
-  // error check that re-computed momemts of inertia match diagonalized ones
+  // error check that re-computed moments of inertia match diagonalized ones
   // do not do test for bodies with params read from infile
 
   double norm;