diff --git a/source/libs/function/src/builtinsimpl.c b/source/libs/function/src/builtinsimpl.c
index efe16ce662..c81f05ea0b 100644
--- a/source/libs/function/src/builtinsimpl.c
+++ b/source/libs/function/src/builtinsimpl.c
@@ -797,7 +797,7 @@ static bool funcNotSupportStringSma(SFunctionNode* pFunc) {
 }
 
 EFuncDataRequired statisDataRequired(SFunctionNode* pFunc, STimeWindow* pTimeWindow) {
-  if(funcNotSupportStringSma(pFunc)) {
+  if (funcNotSupportStringSma(pFunc)) {
     return FUNC_DATA_REQUIRED_DATA_LOAD;
   }
   return FUNC_DATA_REQUIRED_SMA_LOAD;
@@ -6618,7 +6618,7 @@ int32_t blockDBUsageFinalize(SqlFunctionCtx* pCtx, SSDataBlock* pBlock) {
   double   compressRadio = 0;
   if (rawDataSize != 0) {
     compressRadio = totalDiskSize * 100 / (double)rawDataSize;
-    len = tsnprintf(varDataVal(st), sizeof(st) - VARSTR_HEADER_SIZE, "Compress_radio=[%.2f]", compressRadio);
+    len = tsnprintf(varDataVal(st), sizeof(st) - VARSTR_HEADER_SIZE, "Compress_radio=[%.2f%]", compressRadio);
   } else {
     len = tsnprintf(varDataVal(st), sizeof(st) - VARSTR_HEADER_SIZE, "Compress_radio=[NULL]");
   }
diff --git a/tests/system-test/0-others/test_show_disk_usage.py b/tests/system-test/0-others/test_show_disk_usage.py
index eb5bdf1aa7..1c863d7cdf 100644
--- a/tests/system-test/0-others/test_show_disk_usage.py
+++ b/tests/system-test/0-others/test_show_disk_usage.py
@@ -102,7 +102,8 @@ class TDTestCase:
             elif "Compress_radio=" in item[0]:
                 value = item[0].split("=")[1].split(" ")[0].replace("[", "").replace("]", "")
                 if value != 'NULL': 
-                    compress_radio = float(value)
+                    tValue = value[0:len(value) - 1]
+                    compress_radio = float(tValue)
                 #tdLog.debug("compress_occupied: %s" % compress_radio)
         return disk_occupied, compress_radio