--- a/src/pcpjtool.c	2014-10-17 08:38:21.547119790 +0200
+++ b/src/pcpjtool.c	2014-10-17 08:42:04.949035648 +0200
@@ -45,7 +45,7 @@
     int			nb_libre = 0;
     const char*		separation_line = "+---+---+---+---+---+---+---+---+\n";
 
-    fprintf( MainFD, separation_line );
+    fprintf( MainFD, "%s", separation_line );
     for (i=7; i>=0; i--)
     {
 	fputc( '|', MainFD );
@@ -94,7 +94,7 @@
 	    fputc( '|', MainFD );
 	}
 	fputc('\n', MainFD);
-	fprintf( MainFD, separation_line );
+	fprintf( MainFD, "%s", separation_line );
 	if (nb_libre)
 	{
 	    forsythe[nb_forsythe] = '0' + nb_libre;
@@ -224,7 +224,7 @@
 {
     char		s[12];
 
-    fprintf(MainFD, move_to_string(coup, s));
+    fprintf(MainFD, "%s", move_to_string(coup, s));
 }
 
 void