diff --git a/src/bees.cc b/src/bees.cc
index d22fe19..80523a5 100644
--- a/src/bees.cc
+++ b/src/bees.cc
@@ -509,10 +509,14 @@ BeesTempFile::resize(off_t offset)
 	//   and we don't open FS_NOCOW_FL files for dedupe.
 	BEESTRACE("Getting FS_COMPR_FL and FS_NOCOMP_FL on m_fd " << name_fd(m_fd));
 	int flags = ioctl_iflags_get(m_fd);
+	const auto orig_flags = flags;
+
 	flags |= FS_COMPR_FL;
 	flags &= ~(FS_NOCOMP_FL | FS_NOCOW_FL);
-	BEESTRACE("Setting FS_COMPR_FL and clearing FS_NOCOMP_FL | FS_NOCOW_FL on m_fd " << name_fd(m_fd) << " flags " << to_hex(flags));
-	ioctl_iflags_set(m_fd, flags);
+	if (flags != orig_flags) {
+		BEESTRACE("Setting FS_COMPR_FL and clearing FS_NOCOMP_FL | FS_NOCOW_FL on m_fd " << name_fd(m_fd) << " flags " << to_hex(flags));
+		ioctl_iflags_set(m_fd, flags);
+	}
 
 	// That may have queued some delayed ref deletes, so throttle them
 	bees_throttle(resize_timer.age(), "tmpfile_resize");