diff --git a/src/compute_pressure.cpp b/src/compute_pressure.cpp
index 1b27f85fd9..a81cafc3a5 100644
--- a/src/compute_pressure.cpp
+++ b/src/compute_pressure.cpp
@@ -79,9 +79,9 @@ ComputePressure::ComputePressure(LAMMPS *lmp, int narg, char **arg) :
       else if (strcmp(arg[iarg],"angle") == 0) angleflag = 1;
       else if (strcmp(arg[iarg],"dihedral") == 0) dihedralflag = 1;
       else if (strcmp(arg[iarg],"improper") == 0) improperflag = 1;
-      else if (strcmp(arg[iarg],"fix") == 0) fixflag = 1;
       else if (strcmp(arg[iarg],"kspace") == 0) kspaceflag = 1;
-      else error->all("Illegal compute stress/atom command");
+      else if (strcmp(arg[iarg],"fix") == 0) fixflag = 1;
+      else error->all("Illegal compute pressure command");
       iarg++;
     }
   }