diff --git a/CMakeLists.txt b/CMakeLists.txt
index 42019395dbbf453409c0d9442b91797852d96b7d..632cf33100c7e206b5d6a19a26ab29b7e85b13ed 100755
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -695,7 +695,7 @@ if(ON_INFER)
   add_definitions(-DPADDLE_ON_INFERENCE)
   set(WITH_SHARED_IR
       OFF
-      CACHE STRING "Only paddle_inference.so is allowed in inference." FORCE)
+      CACHE BOOL "Only paddle_inference.so is allowed in inference." FORCE)
 else()
   #TODO(luotao), combine this warning with `make inference_lib_dist` command.
   message(