--- xv-3.10a/xvpbm.c~	2013-11-03 09:33:10.000000000 +0100
+++ xv-3.10a/xvpbm.c	2013-11-03 09:33:59.806789183 +0100
@@ -885,8 +885,8 @@
 	  }
 	}
 	else {
-	  if (*pix) fprintf(fp,str1);
-	       else fprintf(fp,str0);
+	  if (*pix) fprintf(fp,"%s", str1);
+	       else fprintf(fp,"%s", str0);
 	  len+=2;
 	  if (len>68) { fprintf(fp,"\n"); len=0; }
 	}