diff --git a/lib/core/update.py b/lib/core/update.py
index f2a8de322..7e0b802a7 100644
--- a/lib/core/update.py
+++ b/lib/core/update.py
@@ -30,7 +30,7 @@ def update():
 
     if not os.path.exists(os.path.join(rootDir, ".git")):
         errMsg = "not a git repository. Please checkout the 'sqlmapproject/sqlmap' repository "
-        errMsg += "from GitHub (e.g. git clone https://github.com/sqlmapproject/sqlmap.git sqlmap-dev)"
+        errMsg += "from GitHub (e.g. 'git clone https://github.com/sqlmapproject/sqlmap.git sqlmap')"
         logger.error(errMsg)
     else:
         infoMsg = "updating sqlmap to the latest development version from the "
@@ -51,7 +51,12 @@ def update():
             _ = lib.core.settings.REVISION = getRevisionNumber()
             logger.info("%s the latest revision '%s'" % ("already at" if "Already" in stdout else "updated to", _))
         else:
-            logger.error("update could not be completed ('%s')" % re.sub(r"\W+", " ", stderr).strip())
+            if "Not a git repository" in stderr:
+                errMsg = "not a valid git repository. Please checkout the 'sqlmapproject/sqlmap' repository "
+                errMsg += "from GitHub (e.g. 'git clone https://github.com/sqlmapproject/sqlmap.git sqlmap')"
+                logger.error(errMsg)
+            else:
+                logger.error("update could not be completed ('%s')" % re.sub(r"\W+", " ", stderr).strip())
 
     if not success:
         if IS_WIN: