diff --git a/linux-sgx.spec b/linux-sgx.spec
index 5f928e98516ad98068542a664df07d4abb4331c2..6f19f829df43d1fb20a124cb206e0d3e63f3f5cf 100644
--- a/linux-sgx.spec
+++ b/linux-sgx.spec
@@ -732,7 +732,7 @@ fi
 ################################################################################
 
 # Install the SGX_PCK_ID_RETRIEVE_TOOL
-ln -s /opt/intel/sgx-pck-id-retrieval-tool/PCKIDRetrievalTool /usr/local/bin/PCKIDRetrievalTool
+ln -sf /opt/intel/sgx-pck-id-retrieval-tool/PCKIDRetrievalTool /usr/local/bin/PCKIDRetrievalTool
 retval=$?
 
 if test $retval -ne 0; then
@@ -821,7 +821,9 @@ echo -e "Uninstallation succeed!"
 
 %postun -n sgx-pck-id-retrieval-tool
 # Removing SGX_PCK_ID_RETRIEVE_TOOL soft link file
-rm -f /usr/local/bin/PCKIDRetrievalTool
+if [ "$1" = "0" ]; then
+    rm -f /usr/local/bin/PCKIDRetrievalTool
+fi
 
 echo -e "Uninstallation succeed!"