--- a/src/asm.c.old	2015-10-28 13:23:53.465014342 +0100
+++ b/src/asm.c	2015-10-28 13:23:10.502813377 +0100
@@ -652,7 +652,7 @@
   macputs(str);
 #else
   if (!inCdb)
-    fprintf(stderr, str);
+    fprintf(stderr, "%s", str);
 #if defined DOSALLGRAPHX
   else {
     if (displayMode == TEXT)
@@ -833,7 +833,7 @@
 #ifdef __MAC__
     textout(notEnoughMemErr);
 #else
-    fprintf(stderr, notEnoughMemErr);
+    fprintf(stderr, "%s", notEnoughMemErr);
 #endif
     Exit(MEMERR);
     break;
@@ -916,7 +916,7 @@
   }
 
   if (ierr >= ERRMAX) {
-    sprintf(outs, tooManyMsgErr);
+    sprintf(outs, "%s", tooManyMsgErr);
 #ifndef VMS
     textout(outs);
 #else
--- a/src/cdb.c.old	2015-10-28 13:24:04.669805966 +0100
+++ b/src/cdb.c	2015-10-28 13:23:10.502813377 +0100
@@ -2760,7 +2760,7 @@
       fprintf(outp, nameByAuthorScores, warrior[idxV[i]].name, warrior[idxV[i]].authorName,
               scrV[idxV[i]]);
       if (warriors > 2) {
-        fprintf(outp, resultsAre);
+        fprintf(outp, "%s", resultsAre);
         for (j = 0; j < warriors; ++j) {
           fprintf(outp, " %d", warrior[idxV[i]].score[j]);
         }
--- a/src/clparse.c.old	2015-10-28 13:24:10.648694768 +0100
+++ b/src/clparse.c	2015-10-28 13:23:10.502813377 +0100
@@ -289,7 +289,7 @@
               if (next_input(filep, inputs)) {
                 if (!strcmp(inputs, "-")) {
                   newFile = stdin;
-                  fprintf(stderr, readingStdin);
+                  fprintf(stderr, "%s", readingStdin);
                 } else {
                   if ((newFile = fopen(inputs, "r")) == NULL) {
                     code = FILENAME;        /* command file not found */
@@ -430,11 +430,11 @@
     errout(outs);
     break;
   case MEMORY:
-    sprintf(outs, outOfMemory);
+    sprintf(outs, "%s", outOfMemory);
     errout(outs);
     break;
   case FILENAME:
-    sprintf(outs, cannotOpenParameterFile);
+    sprintf(outs, "%s", cannotOpenParameterFile);
     errout(outs);
     break;
   }