diff --git a/lib/core/common.py b/lib/core/common.py
index a05a6154d..c501acd24 100644
--- a/lib/core/common.py
+++ b/lib/core/common.py
@@ -732,6 +732,7 @@ def dataToStdout(data, forceOutput=False):
                 sys.stdout.write(data.encode(UNICODE_ENCODING))
             finally:
                 sys.stdout.flush()
+                setFormatterPrependFlag(len(data) == 1)
                 if kb.get("multiThreadMode"):
                     logging._releaseLock()
 
diff --git a/lib/core/option.py b/lib/core/option.py
index f483d9bf4..7c5f3e570 100644
--- a/lib/core/option.py
+++ b/lib/core/option.py
@@ -394,18 +394,22 @@ def __setMultipleTargets():
         infoMsg += "testable requests from the targets list"
         logger.info(infoMsg)
 
-def __adjustFormatter():
+def __adjustLoggingFormatter():
     """
     Solves problem of line deletition caused by overlapping logging messages
     and retrieved data info in inference mode
     """
 
+    if hasattr(FORMATTER, '_format'):
+        return
+
     def format(record):
         _ = FORMATTER._format(record)
         if FORMATTER._prepend_flag:
             _ = "\n%s" % _
             FORMATTER._prepend_flag = False
         return _
+
     FORMATTER._format = FORMATTER.format
     FORMATTER._prepend_flag = False
     FORMATTER.format = format
@@ -1902,7 +1906,7 @@ def init(inputOptions=AttribDict(), overrideOptions=False):
     __checkDependencies()
     __basicOptionValidation()
     __setTorProxySettings()
-    __adjustFormatter()
+    __adjustLoggingFormatter()
     __setMultipleTargets()
     __setTamperingFunctions()
     __setTrafficOutputFP()
diff --git a/lib/techniques/blind/inference.py b/lib/techniques/blind/inference.py
index 003c51f74..eadb602ca 100644
--- a/lib/techniques/blind/inference.py
+++ b/lib/techniques/blind/inference.py
@@ -23,7 +23,6 @@ from lib.core.common import goGoodSamaritan
 from lib.core.common import getPartRun
 from lib.core.common import incrementCounter
 from lib.core.common import safeStringFormat
-from lib.core.common import setFormatterPrependFlag
 from lib.core.common import singleTimeWarnMessage
 from lib.core.data import conf
 from lib.core.data import kb
@@ -450,7 +449,6 @@ def bisection(payload, expression, length=None, charsetType=None, firstChar=None
                                 etaProgressUpdate(time.time() - charStart, len(commonValue))
                             elif conf.verbose in (1, 2):
                                 dataToStdout(commonValue[index-1:])
-                                setFormatterPrependFlag(True)
 
                             finalValue = commonValue
 
@@ -499,7 +497,6 @@ def bisection(payload, expression, length=None, charsetType=None, firstChar=None
                     etaProgressUpdate(time.time() - charStart, index)
                 elif conf.verbose in (1, 2):
                     dataToStdout(val)
-                    setFormatterPrependFlag(True)
 
                 if len(partialValue) > INFERENCE_BLANK_BREAK and partialValue[-INFERENCE_BLANK_BREAK:].isspace():
                     finalValue = partialValue
@@ -507,8 +504,6 @@ def bisection(payload, expression, length=None, charsetType=None, firstChar=None
 
     except KeyboardInterrupt:
         abortedFlag = True
-    finally:
-        setFormatterPrependFlag(False)
 
     if conf.verbose in (1, 2) or showEta:
         dataToStdout("\n")