diff --git a/interfaces/innerkits/fs_manager/libfs_dm/include/fs_dm_linear.h b/interfaces/innerkits/fs_manager/libfs_dm/include/fs_dm_linear.h
index a0df0c5df3c1563498a6e524d5cb6b49c4feb2f7..d72ff1ebbc9fb0a8e31d969106e0b0d21f6411a5 100644
--- a/interfaces/innerkits/fs_manager/libfs_dm/include/fs_dm_linear.h
+++ b/interfaces/innerkits/fs_manager/libfs_dm/include/fs_dm_linear.h
@@ -24,7 +24,7 @@ extern "C" {
 #endif
 #endif
 
-#define MAX_TARGET_NUM 8192
+#define MAX_TARGET_NUM 4096
 typedef DmVerityTarget DmLinearTarget;
 int FsDmCreateMultiTargetLinearDevice(const char *devName, char *dmDevPath, uint64_t dmDevPathLen,
     DmLinearTarget *target, uint32_t targetNum);