diff --git a/src/zimlib/src/config.h b/src/zimlib/src/config.h
deleted file mode 100644
index 49d23c5..0000000
--- a/src/zimlib/src/config.h
+++ /dev/null
@@ -1,99 +0,0 @@
-/* src/zimlib/src/config.h.  Generated from config.h.in by configure.  */
-/* src/zimlib/src/config.h.in.  Generated from configure.ac by autoheader.  */
-
-/* set zim cluster cache size to number of cached chunks */
-#define CLUSTER_CACHE_SIZE 16
-
-/* set zim dirent cache size to number of cached chunks */
-#define DIRENT_CACHE_SIZE 51200
-
-/* defined if bzip2 compression is enabled */
-#define ENABLE_BZIP2 1
-
-/* defined if lzma compression is enabled */
-#define ENABLE_LZMA 1
-
-/* defined if zlib compression is enabled */
-#define ENABLE_ZLIB 1
-
-/* Define to 1 if you have the <dlfcn.h> header file. */
-#define HAVE_DLFCN_H 1
-
-/* Define to 1 if you have the <inttypes.h> header file. */
-#define HAVE_INTTYPES_H 1
-
-/* Define to 1 if you have the `bz2' library (-lbz2). */
-#define HAVE_LIBBZ2 1
-
-/* Define to 1 if you have the `lzma' library (-llzma). */
-#define HAVE_LIBLZMA 1
-
-/* Define to 1 if you have the `microhttpd' library (-lmicrohttpd). */
-#define HAVE_LIBMICROHTTPD 1
-
-/* Define to 1 if you have the `unac' library (-lunac). */
-#define HAVE_LIBUNAC 1
-
-/* Define to 1 if you have the `z' library (-lz). */
-#define HAVE_LIBZ 1
-
-/* Define to 1 if you have the <memory.h> header file. */
-#define HAVE_MEMORY_H 1
-
-/* Define to 1 if you have the `stat64' function. */
-#define HAVE_STAT64 1
-
-/* Define to 1 if you have the <stdint.h> header file. */
-#define HAVE_STDINT_H 1
-
-/* Define to 1 if you have the <stdlib.h> header file. */
-#define HAVE_STDLIB_H 1
-
-/* Define to 1 if you have the <strings.h> header file. */
-#define HAVE_STRINGS_H 1
-
-/* Define to 1 if you have the <string.h> header file. */
-#define HAVE_STRING_H 1
-
-/* Define to 1 if you have the <sys/stat.h> header file. */
-#define HAVE_SYS_STAT_H 1
-
-/* Define to 1 if you have the <sys/types.h> header file. */
-#define HAVE_SYS_TYPES_H 1
-
-/* Define to 1 if you have the <unistd.h> header file. */
-#define HAVE_UNISTD_H 1
-
-/* Define to the sub-directory in which libtool stores uninstalled libraries.
-   */
-#define LT_OBJDIR ".libs/"
-
-/* set lzma uncompress memory size to number of MB */
-#define LZMA_MEMORY_SIZE 128
-
-/* Name of package */
-#define PACKAGE "kiwix"
-
-/* Define to the address where bug reports for this package should be sent. */
-#define PACKAGE_BUGREPORT ""
-
-/* Define to the full name of this package. */
-#define PACKAGE_NAME "kiwix"
-
-/* Define to the full name and version of this package. */
-#define PACKAGE_STRING "kiwix 0.9"
-
-/* Define to the one symbol short name of this package. */
-#define PACKAGE_TARNAME "kiwix"
-
-/* Define to the home page for this package. */
-#define PACKAGE_URL ""
-
-/* Define to the version of this package. */
-#define PACKAGE_VERSION "0.9"
-
-/* Define to 1 if you have the ANSI C header files. */
-#define STDC_HEADERS 1
-
-/* Version number of package */
-#define VERSION "0.9"
diff --git a/src/zimlib/src/file.cpp b/src/zimlib/src/file.cpp
index c349747..497887d 100644
--- a/src/zimlib/src/file.cpp
+++ b/src/zimlib/src/file.cpp
@@ -110,7 +110,7 @@ namespace zim
     }
 
     log_debug("article not found after " << itcount << " iterations (\"" << d.getUrl() << "\" does not match)");
-    return std::pair<bool, const_iterator>(false, const_iterator(this, u));
+    return std::pair<bool, const_iterator>(false, const_iterator(this, c < 0 ? l : u));
   }
 
   std::pair<bool, File::const_iterator> File::findxByTitle(char ns, const std::string& title)
@@ -158,7 +158,7 @@ namespace zim
     }
 
     log_debug("article not found after " << itcount << " iterations (\"" << d.getTitle() << "\" does not match)");
-    return std::pair<bool, const_iterator>(false, const_iterator(this, u, const_iterator::ArticleIterator));
+    return std::pair<bool, const_iterator>(false, const_iterator(this, c < 0 ? l : u, const_iterator::ArticleIterator));
   }
 
   File::const_iterator File::find(char ns, const std::string& url)