diff --git a/htdocs/comm/action/document.php b/htdocs/comm/action/document.php
index 9ca99f8634bd3f962fba2f04c5192a175cf1fe67..972858a808f801a66ca6cf05d313b55a98fefe1d 100644
--- a/htdocs/comm/action/document.php
+++ b/htdocs/comm/action/document.php
@@ -261,7 +261,7 @@ if ($object->id > 0)
 }
 else
 {
-	print $langs->trans("UnkownError");
+	print $langs->trans("ErrorUnknown");
 }
 
 $db->close();
diff --git a/htdocs/comm/propal/document.php b/htdocs/comm/propal/document.php
index 50bc205d9f5da291448133bece473f21fdc2eee0..d3766ae27ceef3bdaef63c1c5efda130842dc862 100644
--- a/htdocs/comm/propal/document.php
+++ b/htdocs/comm/propal/document.php
@@ -137,7 +137,7 @@ if ($object->id > 0)
 }
 else
 {
-	print $langs->trans("UnkownError");
+	print $langs->trans("ErrorUnknown");
 }
 
 llxFooter();
diff --git a/htdocs/compta/deplacement/document.php b/htdocs/compta/deplacement/document.php
index 4c44fffa6e57d3d94b374ae7f85f8be89011d242..fb9df1fcb37dc64940a19b00aba6837766364a4b 100644
--- a/htdocs/compta/deplacement/document.php
+++ b/htdocs/compta/deplacement/document.php
@@ -128,7 +128,7 @@ if ($object->id)
 }
 else
 {
-	print $langs->trans("UnkownError");
+	print $langs->trans("ErrorUnknown");
 }
 
 llxFooter();
diff --git a/htdocs/compta/facture/document.php b/htdocs/compta/facture/document.php
index cc16e5dcf7700959f11ca1d645326718b2fe350e..1eb5909544b43daccf0251358781962600cf8a9b 100644
--- a/htdocs/compta/facture/document.php
+++ b/htdocs/compta/facture/document.php
@@ -160,7 +160,7 @@ if ($id > 0 || ! empty($ref))
 }
 else
 {
-	print $langs->trans("UnkownError");
+	print $langs->trans("ErrorUnknown");
 }
 
 $db->close();
diff --git a/htdocs/compta/sociales/document.php b/htdocs/compta/sociales/document.php
index 2e86a7a698673b19a5ed3316faf1f417db8d0fcf..88c888de62e8372c5767763e4af7d4ec257e6781 100644
--- a/htdocs/compta/sociales/document.php
+++ b/htdocs/compta/sociales/document.php
@@ -167,7 +167,7 @@ if ($object->id)
 }
 else
 {
-    print $langs->trans("UnkownError");
+    print $langs->trans("ErrorUnknown");
 }
 
 
diff --git a/htdocs/contrat/document.php b/htdocs/contrat/document.php
index c29d3b3186c66a67d41842827725c2da750fb722..ea951f85941e463fd52153bf58c13ad20e85f763 100644
--- a/htdocs/contrat/document.php
+++ b/htdocs/contrat/document.php
@@ -130,7 +130,7 @@ if ($object->id)
 }
 else
 {
-	print $langs->trans("UnkownError");
+	print $langs->trans("ErrorUnknown");
 }
 
 
diff --git a/htdocs/fichinter/document.php b/htdocs/fichinter/document.php
index 76fff7b9834a186c186509f3d980be03cdccfe24..27e1c4995c16d3a22f9448a140a324bce2a97b35 100644
--- a/htdocs/fichinter/document.php
+++ b/htdocs/fichinter/document.php
@@ -128,7 +128,7 @@ if ($object->id)
 }
 else
 {
-	print $langs->trans("UnkownError");
+	print $langs->trans("ErrorUnknown");
 }
 
 llxFooter();
diff --git a/htdocs/fourn/facture/document.php b/htdocs/fourn/facture/document.php
index 6c47f66ec7d5fd958d3b36e260bc9c364f221230..57cece25772e97a4d4d783563712e81ee0dc2a63 100644
--- a/htdocs/fourn/facture/document.php
+++ b/htdocs/fourn/facture/document.php
@@ -183,7 +183,7 @@ if ($object->id > 0)
 }
 else
 {
-    print $langs->trans('UnkownError');
+    print $langs->trans('ErrorUnknown');
 }
 
 
diff --git a/htdocs/langs/en_US/main.lang b/htdocs/langs/en_US/main.lang
index d889dedc9d654413e0abf6cf8cfe68d1de877e30..c6e8f96bebed42e728b4dfd556d729d4c79138d4 100644
--- a/htdocs/langs/en_US/main.lang
+++ b/htdocs/langs/en_US/main.lang
@@ -34,7 +34,7 @@ ErrorFailedToOpenFile=Failed to open file %s
 ErrorCanNotCreateDir=Can not create dir %s
 ErrorCanNotReadDir=Can not read dir %s
 ErrorConstantNotDefined=Parameter %s not defined
-ErrorUnknown=Unkown error
+ErrorUnknown=Unknown error
 ErrorSQL=SQL Error
 ErrorLogoFileNotFound=Logo file '%s' was not found
 ErrorGoToGlobalSetup=Go to 'Company/Foundation' setup to fix this
diff --git a/htdocs/product/document.php b/htdocs/product/document.php
index 4a5d1691613f9fdd9c24aac6c74a69c11c71bb32..3137f31b7936651199df91e251072139e3a7056a 100644
--- a/htdocs/product/document.php
+++ b/htdocs/product/document.php
@@ -147,7 +147,7 @@ if ($object->id)
 }
 else
 {
-	print $langs->trans("UnkownError");
+	print $langs->trans("ErrorUnknown");
 }