diff --git a/lib/core/settings.py b/lib/core/settings.py
index b58c103c3..0eee8191e 100644
--- a/lib/core/settings.py
+++ b/lib/core/settings.py
@@ -18,7 +18,7 @@ from lib.core.enums import OS
 from thirdparty.six import unichr as _unichr
 
 # sqlmap version (<major>.<minor>.<month>.<monthly commit>)
-VERSION = "1.5.3.1"
+VERSION = "1.5.3.2"
 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/lib/request/comparison.py b/lib/request/comparison.py
index 32409f5b4..9a32b476c 100644
--- a/lib/request/comparison.py
+++ b/lib/request/comparison.py
@@ -154,14 +154,18 @@ def _comparison(page, headers, code, getRatioValue, pageLength):
             seqMatcher.set_seq1(seq1)
             seqMatcher.set_seq2(seq2)
 
-            key = (hash(seq1), hash(seq2))
+            try:
+                key = (hash(seq1), hash(seq2))
+            except:
+                key = None
 
             if key in kb.cache.comparison:
                 ratio = kb.cache.comparison[key]
             else:
                 ratio = round(seqMatcher.quick_ratio() if not kb.heavilyDynamic else seqMatcher.ratio(), 3)
 
-            kb.cache.comparison[key] = ratio
+            if key:
+                kb.cache.comparison[key] = ratio
 
     # If the url is stable and we did not set yet the match ratio and the
     # current injected value changes the url page content