diff --git a/bin/packages/config.cfg.sample b/bin/packages/config.cfg.sample
index da50932f..cb45da06 100644
--- a/bin/packages/config.cfg.sample
+++ b/bin/packages/config.cfg.sample
@@ -21,15 +21,17 @@ sentiment_lexicon_file = sentiment/vader_lexicon.zip/vader_lexicon/vader_lexicon
 ##### Flask #####
 [Flask]
 #Maximum number of character to display in the toolip
-max_preview_char = 250 
+max_preview_char = 250
 #Maximum number of character to display in the modal
-max_preview_modal = 800 
+max_preview_modal = 800
 #Default number of header to display in trending graphs
 default_display = 10
 #Number of minutes displayed for the number of processed pastes.
 minute_processed_paste = 10
+#Maximum line length authorized to make a diff between duplicates 
+DiffMaxLineLength = 10000
 
-#### Modules #### 
+#### Modules ####
 [Modules_Duplicates]
 #Number of month to look back
 maximum_month_range = 3
diff --git a/var/www/modules/Flask_config.py b/var/www/modules/Flask_config.py
index 5e51c4ac..256ddfd8 100644
--- a/var/www/modules/Flask_config.py
+++ b/var/www/modules/Flask_config.py
@@ -63,3 +63,4 @@ max_preview_char = int(cfg.get("Flask", "max_preview_char")) # Maximum number of
 max_preview_modal = int(cfg.get("Flask", "max_preview_modal")) # Maximum number of character to display in the modal
 
 tlsh_to_percent = 1000.0 #Use to display the estimated percentage instead of a raw value
+DiffMaxLineLength =  int(cfg.get("Flask", "DiffMaxLineLength"))#Use to display the estimated percentage instead of a raw value
diff --git a/var/www/modules/showpaste/Flask_showpaste.py b/var/www/modules/showpaste/Flask_showpaste.py
index eedfda17..1acb26a2 100644
--- a/var/www/modules/showpaste/Flask_showpaste.py
+++ b/var/www/modules/showpaste/Flask_showpaste.py
@@ -21,6 +21,7 @@ r_serv_pasteName = Flask_config.r_serv_pasteName
 max_preview_char = Flask_config.max_preview_char
 max_preview_modal = Flask_config.max_preview_modal
 tlsh_to_percent = Flask_config.tlsh_to_percent
+DiffMaxLineLength = Flask_config.DiffMaxLineLength
 
 showsavedpastes = Blueprint('showsavedpastes', __name__, template_folder='templates')
 
@@ -122,7 +123,7 @@ def showDiff():
     p2 = Paste.Paste(s2)
     maxLengthLine1 = p1.get_lines_info()[1]
     maxLengthLine2 = p2.get_lines_info()[1]
-    if maxLengthLine1 > 100000 or maxLengthLine2 > 100000:
+    if maxLengthLine1 > DiffMaxLineLength or maxLengthLine2 > DiffMaxLineLength:
         return "Can't make the difference as the lines are too long."
     htmlD = difflib.HtmlDiff()
     lines1 = p1.get_p_content().decode('utf8', 'ignore').splitlines()