diff --git a/lib/core/settings.py b/lib/core/settings.py
index 46fdf0ee9..6bc308c59 100755
--- a/lib/core/settings.py
+++ b/lib/core/settings.py
@@ -19,7 +19,7 @@ from lib.core.enums import DBMS_DIRECTORY_NAME
 from lib.core.enums import OS
 
 # sqlmap version (<major>.<minor>.<month>.<monthly commit>)
-VERSION = "1.1.9.7"
+VERSION = "1.1.9.8"
 TYPE = "dev" if VERSION.count('.') > 2 and VERSION.split('.')[-1] != '0' else "stable"
 TYPE_COLORS = {"dev": 33, "stable": 90, "pip": 34}
 VERSION_STRING = "sqlmap/%s#%s" % ('.'.join(VERSION.split('.')[:-1]) if VERSION.count('.') > 2 and VERSION.split('.')[-1] == '0' else VERSION, TYPE)
diff --git a/tamper/greatest.py b/tamper/greatest.py
index 012cc6771..2a54326f6 100644
--- a/tamper/greatest.py
+++ b/tamper/greatest.py
@@ -36,10 +36,10 @@ def tamper(payload, **kwargs):
     retVal = payload
 
     if payload:
-        match = re.search(r"(?i)(\b(AND|OR)\b\s+)(?!.*\b(AND|OR)\b)([^>]+?)\s*>\s*([^>#-]+)", payload)
+        match = re.search(r"(?i)(\b(AND|OR)\b\s+)([^>]+?)\s*>\s*(\w+|'[^']+')", payload)
 
         if match:
-            _ = "%sGREATEST(%s,%s+1)=%s" % (match.group(1), match.group(4), match.group(5), match.group(4))
+            _ = "%sGREATEST(%s,%s+1)=%s" % (match.group(1), match.group(3), match.group(4), match.group(3))
             retVal = retVal.replace(match.group(0), _)
 
     return retVal
diff --git a/txt/checksum.md5 b/txt/checksum.md5
index 049f0cc37..bddc503bb 100644
--- a/txt/checksum.md5
+++ b/txt/checksum.md5
@@ -46,7 +46,7 @@ c5f09788ee8ff9c9d12a052986875bc6  lib/core/option.py
 d8e9250f3775119df07e9070eddccd16  lib/core/replication.py
 785f86e3f963fa3798f84286a4e83ff2  lib/core/revision.py
 40c80b28b3a5819b737a5a17d4565ae9  lib/core/session.py
-4bb83f1325fdd8aea4f88b090ce304f2  lib/core/settings.py
+0462adcff8d2d98318bbcaf29e9c9ca9  lib/core/settings.py
 d91291997d2bd2f6028aaf371bf1d3b6  lib/core/shell.py
 2ad85c130cc5f2b3701ea85c2f6bbf20  lib/core/subprocessng.py
 1576b63db3261e2afd5459189abf967b  lib/core/target.py
@@ -240,7 +240,7 @@ f341a48112354a50347546fa73f4f531  tamper/commalessmid.py
 28c21fd9c9801d398698c646bb894260  tamper/concat2concatws.py
 d496b8abd40ea1a86c771d9d20174f61  tamper/equaltolike.py
 fb3c31b72675f6ef27fa420a4e974a55  tamper/escapequotes.py
-9efcdbfd3012d3c84ee67e87550d8432  tamper/greatest.py
+a5770c537c7e05510108af62fa0ad7b0  tamper/greatest.py
 b3df54fef913223b4f4fd90aa122870f  tamper/halfversionedmorekeywords.py
 a3a0e76922b4f40f422a0daca4e71af3  tamper/htmlencode.py
 6fa2d48bf8a1020a07d1cb95a14688a8  tamper/ifnull2ifisnull.py