diff --git a/apps/shell/src/shcmd.c b/apps/shell/src/shcmd.c
index e51dee3d685586dd4188f15a8db1af928f6068d8..ce722363c86d4cc185b0a5c0408c11c4530a4795 100644
--- a/apps/shell/src/shcmd.c
+++ b/apps/shell/src/shcmd.c
@@ -48,6 +48,7 @@ static void OsFreeCmdPara(CmdParsed *cmdParsed)
             cmdParsed->paramArray[i] = NULL;
         }
     }
+    return;
 }
 
 static int OsStrSeparateTabStrGet(const char **tabStr, CmdParsed *parsed, unsigned int tabStrLen)
@@ -294,6 +295,7 @@ static void OsCompleteStr(char *result, const char *target, char *cmdKey, unsign
         *des++ = *src++;
         (*len)++;
     }
+    return;
 }
 
 static int OsExecNameMatch(const char *strPath, const char *nameLooking, char *strObj, unsigned int *maxLen)
@@ -508,6 +510,7 @@ void OsShellKeyDeInit(CmdKeyLink *cmdKeyLink)
 
     cmdKeyLink->count = 0;
     free(cmdKeyLink);
+    return;
 }
 
 void OsShellCmdPush(const char *string, CmdKeyLink *cmdKeyLink)
@@ -533,6 +536,8 @@ void OsShellCmdPush(const char *string, CmdKeyLink *cmdKeyLink)
 
     SH_ListTailInsert(&(cmdKeyLink->list), &(cmdNewNode->list));
 
+    free(cmdNewNode);
+
     return;
 }