2 files changed, 4 insertions, 2 deletions

diff --git a/cmdedit.c b/cmdedit.c
index 981253db1..4f124d647 100644
--- a/cmdedit.c
+++ b/cmdedit.c
@@ -442,7 +442,8 @@ static void parse_prompt(const char *prmt_ptr)
                 if (flg_not_length == ']')
                         sub_len++;
         }
-        free(pwd_buf);
+        if(pwd_buf!=(char *)unknown)
+                free(pwd_buf);
         cmdedit_prompt = prmt_mem_ptr;
         cmdedit_prmt_len = prmt_len - sub_len;
         put_prompt();
diff --git a/shell/cmdedit.c b/shell/cmdedit.c
index 981253db1..4f124d647 100644
--- a/shell/cmdedit.c
+++ b/shell/cmdedit.c
@@ -442,7 +442,8 @@ static void parse_prompt(const char *prmt_ptr)
                 if (flg_not_length == ']')
                         sub_len++;
         }
-        free(pwd_buf);
+        if(pwd_buf!=(char *)unknown)
+                free(pwd_buf);
         cmdedit_prompt = prmt_mem_ptr;
         cmdedit_prmt_len = prmt_len - sub_len;
         put_prompt();