diff --git a/inc/fuse/fuse.h b/inc/fuse/fuse.h
index 004ea443..f5e51264 100644
--- a/inc/fuse/fuse.h
+++ b/inc/fuse/fuse.h
@@ -78,7 +78,7 @@ struct fuse_operations
     int (*create)(const char *path, fuse_mode_t mode, struct fuse_file_info *fi);
     int (*ftruncate)(const char *path, fuse_off_t off, struct fuse_file_info *fi);
     int (*fgetattr)(const char *path, struct fuse_stat *stbuf, struct fuse_file_info *fi);
-    int (*lock)(const char *path, struct fuse_file_info *fi, int cmd, struct flock *lock);
+    int (*lock)(const char *path, struct fuse_file_info *fi, int cmd, struct fuse_flock *lock);
     int (*utimens)(const char *path, const struct fuse_timespec tv[2]);
     int (*bmap)(const char *path, size_t blocksize, uint64_t *idx);
     unsigned int flag_nullpath_ok:1;
diff --git a/inc/fuse/winfsp_fuse.h b/inc/fuse/winfsp_fuse.h
index a8b68287..75d4a614 100644
--- a/inc/fuse/winfsp_fuse.h
+++ b/inc/fuse/winfsp_fuse.h
@@ -142,6 +142,15 @@ struct fuse_statvfs
 };
 #endif
 
+struct fuse_flock
+{
+    int16_t l_type;
+    int16_t l_whence;
+    fuse_off_t l_start;
+    fuse_off_t l_len;
+    fuse_pid_t l_pid;
+};
+
 #if defined(WINFSP_DLL_INTERNAL)
 #define FSP_FUSE_ENV_INIT               \
     {                                   \
@@ -190,6 +199,7 @@ struct fuse_statvfs
 
 #define fuse_stat                       stat
 #define fuse_statvfs                    statvfs
+#define fuse_flock                      flock
 
 #define FSP_FUSE_ENV_INIT               \
     {                                   \