diff --git a/lib/core/agent.py b/lib/core/agent.py
index f6a541b84..73a121c00 100644
--- a/lib/core/agent.py
+++ b/lib/core/agent.py
@@ -185,6 +185,11 @@ class Agent(object):
                 newValue = newValue.replace(BOUNDARY_BACKSLASH_MARKER, '\\')
                 newValue = self.adjustLateValues(newValue)
 
+            # NOTE: https://github.com/sqlmapproject/sqlmap/issues/5488
+            if kb.customInjectionMark in origValue:
+                payload = newValue.replace(origValue, "")
+                newValue = origValue.replace(kb.customInjectionMark, payload)
+
             # TODO: support for POST_HINT
             newValue = "%s%s%s" % (BOUNDED_BASE64_MARKER, newValue, BOUNDED_BASE64_MARKER)
 
diff --git a/lib/core/settings.py b/lib/core/settings.py
index 863d14e9f..03883b664 100644
--- a/lib/core/settings.py
+++ b/lib/core/settings.py
@@ -20,7 +20,7 @@ from thirdparty import six
 from thirdparty.six import unichr as _unichr
 
 # sqlmap version (<major>.<minor>.<month>.<monthly commit>)
-VERSION = "1.7.8.6"
+VERSION = "1.7.8.7"
 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)