diff --git a/block/block-backend.c b/block/block-backend.c
index c75942b..60fb7eb 100644
--- a/block/block-backend.c
+++ b/block/block-backend.c
@@ -2314,8 +2314,8 @@
                           flags | BDRV_REQ_ZERO_WRITE);
 }
 
-int blk_pwrite_compressed(BlockBackend *blk, int64_t offset, const void *buf,
-                          int64_t bytes)
+int blk_pwrite_compressed(BlockBackend *blk, int64_t offset, int64_t bytes,
+                          const void *buf)
 {
     QEMUIOVector qiov = QEMU_IOVEC_INIT_BUF(qiov, buf, bytes);
     IO_OR_GS_CODE();
diff --git a/include/sysemu/block-backend-io.h b/include/sysemu/block-backend-io.h
index 93a1507..695b793 100644
--- a/include/sysemu/block-backend-io.h
+++ b/include/sysemu/block-backend-io.h
@@ -167,8 +167,8 @@
 
 int blk_ioctl(BlockBackend *blk, unsigned long int req, void *buf);
 
-int blk_pwrite_compressed(BlockBackend *blk, int64_t offset, const void *buf,
-                          int64_t bytes);
+int blk_pwrite_compressed(BlockBackend *blk, int64_t offset, int64_t bytes,
+                          const void *buf);
 int blk_pdiscard(BlockBackend *blk, int64_t offset, int64_t bytes);
 int blk_pwrite_zeroes(BlockBackend *blk, int64_t offset,
                       int64_t bytes, BdrvRequestFlags flags);
diff --git a/qemu-img.c b/qemu-img.c
index df607a2..7d4b33b 100644
--- a/qemu-img.c
+++ b/qemu-img.c
@@ -2114,7 +2114,7 @@
 
     if (s->compressed && !s->ret) {
         /* signal EOF to align */
-        ret = blk_pwrite_compressed(s->target, 0, NULL, 0);
+        ret = blk_pwrite_compressed(s->target, 0, 0, NULL);
         if (ret < 0) {
             return ret;
         }
diff --git a/qemu-io-cmds.c b/qemu-io-cmds.c
index c8cbaed..952dc94 100644
--- a/qemu-io-cmds.c
+++ b/qemu-io-cmds.c
@@ -631,7 +631,7 @@
         return -ERANGE;
     }
 
-    ret = blk_pwrite_compressed(blk, offset, buf, bytes);
+    ret = blk_pwrite_compressed(blk, offset, bytes, buf);
     if (ret < 0) {
         return ret;
     }