diff --git a/src/CLASS2/improper_class2.cpp b/src/CLASS2/improper_class2.cpp
index 716ced12f5..7f0f31bc1f 100644
--- a/src/CLASS2/improper_class2.cpp
+++ b/src/CLASS2/improper_class2.cpp
@@ -157,13 +157,12 @@ void ImproperClass2::compute(int eflag, int vflag)
 	int me;
 	MPI_Comm_rank(world,&me);
 	if (screen) {
-	  char str[128],fstr[64];
-	  sprintf(fstr,"Improper problem: %%d %s %%d %%d %%d %%d",
-		  BIGINT_FORMAT);
-	  sprintf(str,fstr,me,update->ntimestep,
+	  char str[128];
+	  sprintf(str,
+		  "Improper problem: %d " BIGINT_FORMAT " %d %d %d %d",
+		  me,update->ntimestep,
 		  atom->tag[i1],atom->tag[i2],atom->tag[i3],atom->tag[i4]);
 	  error->warning(str,0);
-	  error->warning(str,0);
 	  fprintf(screen,"  1st atom: %d %g %g %g\n",
 		  me,x[i1][0],x[i1][1],x[i1][2]);
 	  fprintf(screen,"  2nd atom: %d %g %g %g\n",
diff --git a/src/fix_orient_fcc.cpp b/src/fix_orient_fcc.cpp
index 061884ff56..a02558040c 100644
--- a/src/fix_orient_fcc.cpp
+++ b/src/fix_orient_fcc.cpp
@@ -404,13 +404,13 @@ void FixOrientFCC::post_force(int vflag)
 
     if (me == 0) { 
       if (screen) fprintf(screen,
-			  "orient step %d: " BIGINT_FORMAT 
+			  "orient step " BIGINT_FORMAT ": " BIGINT_FORMAT 
 			  " atoms have %d neighbors\n",
 			  update->ntimestep,atom->natoms,total);
       if (logfile) fprintf(logfile,
-			  "orient step %d: " BIGINT_FORMAT 
-			  " atoms have %d neighbors\n",
-			  update->ntimestep,atom->natoms,total);
+			   "orient step " BIGINT_FORMAT ": " BIGINT_FORMAT 
+			   " atoms have %d neighbors\n",
+			   update->ntimestep,atom->natoms,total);
       if (screen)
 	fprintf(screen,"  neighs: min = %d, max = %d, ave = %g\n",
 		min,max,ave);
diff --git a/src/thermo.cpp b/src/thermo.cpp
index 4a7ae0afc8..1931017099 100644
--- a/src/thermo.cpp
+++ b/src/thermo.cpp
@@ -514,8 +514,8 @@ void Thermo::modify_params(int narg, char **arg)
 	if (ptr == NULL) 
 	  error->all("Thermo_modify int format does not contain d character");
 	*ptr = '\0';
-	sprintf(format_bigint_user,"%s" BIGINT_FORMAT "%s",
-		format_int_user,ptr+1);
+	sprintf(format_bigint_user,"%s%s%s",format_int_user,
+		BIGINT_FORMAT,ptr+1);
 	*ptr = 'd';
       } else if (strcmp(arg[iarg+1],"float") == 0) {
 	if (format_float_user) delete [] format_float_user;