--- interfaces/swig/python/pyhelpers.cpp.str	2008-12-27 05:04:09.000000000 +0100
+++ interfaces/swig/python/pyhelpers.cpp	2008-12-27 05:05:14.000000000 +0100
@@ -99,13 +99,13 @@
 
         // first element
         // out<<chdelim1;
-		fprintf(f, chdelim1);
+		fprintf(f, "%s", chdelim1);
         fprintf(f, fmt, ((T*)(cdata+i*step))[0]);
         for(k=1; k<nch; k++){
 			fprintf(f, ", ");
 			fprintf(f, fmt, ((T*)(cdata+i*step))[k]);
         }
-		fprintf(f, chdelim2);
+		fprintf(f, "%s", chdelim2);
 
         // remaining elements
         for(j=nch*sizeof(T); j<step; j+=(nch*sizeof(T))){
@@ -115,7 +115,7 @@
 				fprintf(f, ", ");
 				fprintf(f, fmt, ((T*)(cdata+i*step+j))[k]);
             }
-			fprintf(f, chdelim2);
+			fprintf(f, "%s", chdelim2);
         }
 		fprintf(f, "]\n" );
     }