diff --git a/src/pair_smatb.cpp b/src/pair_smatb.cpp
index 244194183d..cda65837c8 100644
--- a/src/pair_smatb.cpp
+++ b/src/pair_smatb.cpp
@@ -82,7 +82,7 @@ void PairSMATB::compute(int eflag, int vflag)
   double dijsq, dij;
   double espo, aexpp, qsiexpq, eb_i, Fb, Fr;
   double polyval, polyval2, polyval3, polyval4, polyval5;
-  //sets up the flags for energy caclulations
+  //sets up the flags for energy calculations
   if (eflag || vflag) {
     ev_setup(eflag, vflag);
     eng_vdwl = 0;
diff --git a/src/pair_smatb.h b/src/pair_smatb.h
index fc4f1f2a9b..d87546ecd1 100644
--- a/src/pair_smatb.h
+++ b/src/pair_smatb.h
@@ -49,7 +49,7 @@ class PairSMATB : public Pair {
   virtual void allocate();
   // allocated size of per-atom arrays
   int nmax;
-  //allocated to store up caclulation values
+  //allocated to store up calculation values
   double *on_eb{nullptr};
   // interaction radius, user-given
   double **r0{nullptr};
diff --git a/src/pair_smatb_single.cpp b/src/pair_smatb_single.cpp
index 92e55916df..f7910b076a 100644
--- a/src/pair_smatb_single.cpp
+++ b/src/pair_smatb_single.cpp
@@ -66,7 +66,7 @@ void PairSMATBSingle::compute(int eflag, int vflag)
   double dijsq, dij;
   double espo, aexpp, qsiexpq, eb_i, Fb, Fr;
   double polyval, polyval2, polyval3, polyval4, polyval5;
-  //sets up the flags for energy caclulations
+  //sets up the flags for energy calculations
   if (eflag || vflag) {
     ev_setup(eflag, vflag);
     eng_vdwl = 0;
diff --git a/src/pair_smatb_single.h b/src/pair_smatb_single.h
index 4b8fcf70e5..8d31a7d047 100644
--- a/src/pair_smatb_single.h
+++ b/src/pair_smatb_single.h
@@ -49,7 +49,7 @@ class PairSMATBSingle : public Pair {
   virtual void allocate();
   // allocated size of per-atom arrays
   int nmax;
-  //allocated to store up caclulation values
+  //allocated to store up calculation values
   double *on_eb{nullptr};
   // interaction radius, user-given
   double r0;