diff --git a/docker/mingw64/Dockerfile b/docker/mingw64/Dockerfile
index 1e5c423..9cb6dfb 100644
--- a/docker/mingw64/Dockerfile
+++ b/docker/mingw64/Dockerfile
@@ -1,6 +1,6 @@
 # yazc static executable for Windows 64-bits
 
-FROM ubuntu:22.10
+FROM ubuntu:22.04
 MAINTAINER Marc Ferland <marc.ferland@gmail.com>
 
 RUN apt update \
diff --git a/lib/file.c b/lib/file.c
index ef8e21c..0d6436b 100644
--- a/lib/file.c
+++ b/lib/file.c
@@ -55,6 +55,41 @@
 #define CD_ENTRY64_LEN     56   /* Zip64 central directory entry length */
 #define CD_BUF_LEN         (MAX_COM_LEN + EOCD_LEN + EOCD64_LOC_LEN)
 
+/*
+ * Taken from:
+ * https://opensource.apple.com/source/Libc/Libc-825.25/string/FreeBSD/memmem.c.auto.html
+ */
+#ifdef __MINGW64__
+void *
+memmem(const void *l, size_t l_len, const void *s, size_t s_len)
+{
+	register char *cur, *last;
+	const char *cl = (const char *)l;
+	const char *cs = (const char *)s;
+
+	/* we need something to compare */
+	if (l_len == 0 || s_len == 0)
+		return NULL;
+
+	/* "s" must be smaller or equal to "l" */
+	if (l_len < s_len)
+		return NULL;
+
+	/* special case where s_len == 1 */
+	if (s_len == 1)
+		return memchr(l, (int)*cs, l_len);
+
+	/* the last position where its possible to find "s" in "l" */
+	last = (char *)cl + l_len - s_len;
+
+	for (cur = (char *)cl; cur <= last; cur++)
+		if (cur[0] == cs[0] && memcmp(cur, cs, s_len) == 0)
+			return cur;
+
+	return NULL;
+}
+#endif
+
 /**
  * SECTION:file
  * @short_description: libzc zip file
@@ -852,7 +887,7 @@ static int read_all_entries_at(struct zc_file *f, off_t cd_offset, uint64_t nben
 		if (!info)
 			goto err;
 
-		dbg(f->ctx, "Reading entry: %ld\n", i);
+		dbg(f->ctx, "Reading entry: %"PRIu64"\n", i);
 
 		ret = read_single_entry_at(f, cd_offset, &info->header,
 					   &info->extra, &cd_offset);
@@ -1034,7 +1069,7 @@ static int fill_info_list_central_directory(struct zc_file *f)
 
 		/* basic sanity checks */
 		if (!entries_in_cd || cd_offset > sb.st_size) {
-			err(f->ctx, "detected invalid zip file: entries_in_cd: %ld, cd_offset: 0x%016jx\n",
+			err(f->ctx, "detected invalid zip file: entries_in_cd: %"PRIu64", cd_offset: 0x%016jx\n",
 			    entries_in_cd, cd_offset);
 			to_read = rem;
 			from++;
diff --git a/lib/libzc_private.h b/lib/libzc_private.h
index 8605af0..2bdd1d3 100644
--- a/lib/libzc_private.h
+++ b/lib/libzc_private.h
@@ -42,7 +42,13 @@
 #define LOG_DEBUG   7 /* debug-level messages */
 #endif
 
-static inline void __attribute__((always_inline, format(printf, 2, 3)))
+#ifdef __MINGW64__
+#define __ZC_PRINTF_FORMAT __MINGW_PRINTF_FORMAT
+#else
+#define __ZC_PRINTF_FORMAT printf
+#endif
+
+static inline void __attribute__((always_inline, format(__ZC_PRINTF_FORMAT, 2, 3)))
 zc_log_null(struct zc_ctx *ctx __attribute__((__unused__)),
 	    const char *format __attribute__((__unused__)), ...)
 {
@@ -50,10 +56,10 @@ zc_log_null(struct zc_ctx *ctx __attribute__((__unused__)),
 
 void zc_log(struct zc_ctx *ctx, int priority, const char *file, int line,
 	    const char *fn, const char *format, ...)
-	__attribute__((format(printf, 6, 7)));
+	__attribute__((format(__ZC_PRINTF_FORMAT, 6, 7)));
 
 void zc_trace(const char *file, int line, const char *fn, const char *format,
-	      ...) __attribute__((format(printf, 4, 5)));
+	      ...) __attribute__((format(__ZC_PRINTF_FORMAT, 4, 5)));
 
 #define zc_log_cond(ctx, prio, arg...)                                      \
 	do {                                                                \
diff --git a/scripts/build-mingw64.sh b/scripts/build-mingw64.sh
index a13d008..e4bc942 100755
--- a/scripts/build-mingw64.sh
+++ b/scripts/build-mingw64.sh
@@ -18,9 +18,9 @@ export PTHREAD_CFLAGS="-I${MINGW_LOCAL_PATH}/include"
 ../configure --host=x86_64-w64-mingw32 \
 	     --enable-static \
 	     --disable-shared \
-	     CFLAGS="-Ofast" \
+	     CPPFLAGS="-D_FILE_OFFSET_BITS=64" \
 	     LDFLAGS="-L${MINGW_LIB_PATH} -lmman ${PTHREAD_LIBS}"
-make -j12
+make V=1
 
 V=$(../configure -V | grep 'zc configure' | cut -d' ' -f3)
 ARCHIVE=yazc-v${V}-win64.zip