diff --git a/deps/miniz/zlib.h b/deps/miniz/zlib.h
index f951f588ad..3de0b6821c 100644
--- a/deps/miniz/zlib.h
+++ b/deps/miniz/zlib.h
@@ -394,7 +394,7 @@ const char *mz_error(int err);
   #define Z_DEFLATED            MZ_DEFLATED
   #define Z_DEFAULT_WINDOW_BITS MZ_DEFAULT_WINDOW_BITS
   #define alloc_func            mz_alloc_func
-  #define free_func             mz_free_func
+  //#define free_func             mz_free_func
   #define internal_state        mz_internal_state
   #define z_stream              mz_stream
   #define deflateInit           mz_deflateInit
diff --git a/deps/minizip/unzip.c b/deps/minizip/unzip.c
index 8b82276195..87ae6246fe 100644
--- a/deps/minizip/unzip.c
+++ b/deps/minizip/unzip.c
@@ -1036,10 +1036,10 @@ int unzOpenCurrentFile3 (unzFile file, int *method, int *level, int raw, const c
     if ((s->cur_file_info.compression_method==Z_DEFLATED) &&
         (!raw))
     {
-      pfile_in_zip_read_info->stream.zalloc = (alloc_func)0;
-      pfile_in_zip_read_info->stream.zfree = (free_func)0;
-      pfile_in_zip_read_info->stream.opaque = (voidpf)0;
-      pfile_in_zip_read_info->stream.next_in = (const unsigned char*)0;
+      pfile_in_zip_read_info->stream.zalloc = (mz_alloc_func)0;
+      pfile_in_zip_read_info->stream.zfree = (mz_free_func)0;
+      pfile_in_zip_read_info->stream.opaque = 0;
+      pfile_in_zip_read_info->stream.next_in = 0;
       pfile_in_zip_read_info->stream.avail_in = 0;
 
       err=inflateInit2(&pfile_in_zip_read_info->stream, -MAX_WBITS);
diff --git a/deps/minizip/unzip.h b/deps/minizip/unzip.h
index 05e8ef888b..8a16d8e6fc 100644
--- a/deps/minizip/unzip.h
+++ b/deps/minizip/unzip.h
@@ -69,7 +69,7 @@ typedef voidp unzFile;
 #define UNZ_END_OF_LIST_OF_FILE         (-100)
 #define UNZ_ERRNO                       (Z_ERRNO)
 #define UNZ_EOF                         (0)
-#define UNZ_PARAMERROR                  (-102)
+#define UNZ_PARAMERROR                  (-102UL)
 #define UNZ_BADZIPFILE                  (-103)
 #define UNZ_INTERNALERROR               (-104)
 #define UNZ_CRCERROR                    (-105)