diff --git a/libs/sofia-sip/libsofia-sip-ua/su/su_uniqueid.c b/libs/sofia-sip/libsofia-sip-ua/su/su_uniqueid.c
index 6c2a72bd5e..f5f0f2c5f1 100644
--- a/libs/sofia-sip/libsofia-sip-ua/su/su_uniqueid.c
+++ b/libs/sofia-sip/libsofia-sip-ua/su/su_uniqueid.c
@@ -138,7 +138,7 @@ static void init(void)
 
 #if HAVE_INITSTATE
   /* Allow libsofia-sip-ua.so to unload. */
-  uint32_t *seed = calloc(32, sizeof *seed);
+  uint32_t *seed = calloc(32, sizeof(uint32_t));
 #else
   static uint32_t seed[32] = { 0 };
 #endif
@@ -171,7 +171,7 @@ static void init(void)
   }
 
 #if HAVE_INITSTATE
-  initstate(seed[0] ^ seed[1], (char *)&seed, sizeof(seed));
+  initstate(seed[0] ^ seed[1], (char *)seed, 32 * sizeof(uint32_t));
 #else
   srand(seed[0] ^ seed[1]);
 #endif
diff --git a/libs/sofia-sip/m4/sac-su2.m4 b/libs/sofia-sip/m4/sac-su2.m4
index 5b47ef4fe4..2a8d75d6a6 100644
--- a/libs/sofia-sip/m4/sac-su2.m4
+++ b/libs/sofia-sip/m4/sac-su2.m4
@@ -526,7 +526,7 @@ AC_SEARCH_LIBS(getaddrinfo, xnet socket nsl)
 
 AC_FUNC_ALLOCA
 
-AC_CHECK_FUNCS([gettimeofday strerror random tcsetattr flock \
+AC_CHECK_FUNCS([gettimeofday strerror random tcsetattr initstate flock \
                 socketpair gethostname gethostbyname getipnodebyname \
                 poll epoll_create kqueue select if_nameindex \
 		signal alarm \