diff --git a/src/zimlib/src/config.h b/src/zimlib/src/config.h
index dd3f879..bd9132f 100644
--- a/src/zimlib/src/config.h
+++ b/src/zimlib/src/config.h
@@ -62,6 +62,9 @@
 /* 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"
 
diff --git a/src/zimlib/src/config.h.in b/src/zimlib/src/config.h.in
index 5f3707d..29c5503 100644
--- a/src/zimlib/src/config.h.in
+++ b/src/zimlib/src/config.h.in
@@ -61,6 +61,9 @@
 /* Define to the one symbol short name of this package. */
 #undef PACKAGE_TARNAME
 
+/* Define to the home page for this package. */
+#undef PACKAGE_URL
+
 /* Define to the version of this package. */
 #undef PACKAGE_VERSION
 
diff --git a/src/zimlib/src/uuid.cpp b/src/zimlib/src/uuid.cpp
index 9ff9159..8ecd0a1 100644
--- a/src/zimlib/src/uuid.cpp
+++ b/src/zimlib/src/uuid.cpp
@@ -77,7 +77,13 @@ namespace zim
 
 #else
 
-    *reinterpret_cast<int32_t*>(ret.data) = reinterpret_cast<int32_t>(&ret);
+    union {
+      void* p;
+      int32_t n;
+    } u;
+    u.p = &ret;
+
+    *reinterpret_cast<int32_t*>(ret.data) = u.n;
     *reinterpret_cast<int32_t*>(ret.data + 4) = static_cast<int32_t>(tv.tv_sec);
     *reinterpret_cast<int32_t*>(ret.data + 8) = static_cast<int32_t>(tv.tv_usec);
     *reinterpret_cast<int32_t*>(ret.data + 12) = static_cast<int32_t>(getpid());