diff --git a/src/lceasy.c b/src/lceasy.c
index f5cf22b..a9dec1d 100644
--- a/src/lceasy.c
+++ b/src/lceasy.c
@@ -410,7 +410,7 @@ static int lcurl_easy_unset_HTTPPOST(lua_State *L){
           we also unset it to be sure that there no way to
           call default curl reader with our READDATA
        */
-      curl_easy_setopt(p->curl, CURLOPT_READFUNCTION, 0);
+      curl_easy_setopt(p->curl, CURLOPT_READFUNCTION, (void*)0);
       curl_easy_setopt(p->curl, CURLOPT_READDATA, 0);
     }
     lcurl_storage_remove_i(L, p->storage, CURLOPT_HTTPPOST);
diff --git a/src/lcutils.h b/src/lcutils.h
index cfef314..4e0c6f0 100644
--- a/src/lcutils.h
+++ b/src/lcutils.h
@@ -16,7 +16,8 @@
 #define LCURL_MAKE_VERSION(MIN, MAJ, PAT) ((MIN<<16) + (MAJ<<8) + PAT)
 #define LCURL_CURL_VER_GE(MIN, MAJ, PAT) (LIBCURL_VERSION_NUM >= LCURL_MAKE_VERSION(MIN, MAJ, PAT))
 
-#define LCURL_STATIC_ASSERT(A) {(int(*)[(A)?1:0])0;}
+//! @fixme on mingw32 (gcc 4.8.1) this does not work
+#define LCURL_STATIC_ASSERT(A) {(void)(int(*)[(A)?1:0])0;}
 
 typedef struct lcurl_const_tag{
   const char *name;