diff --git a/build/eForth.ihx b/build/eForth.ihx
index 52e9be6..73c52c5 100644
--- a/build/eForth.ihx
+++ b/build/eForth.ihx
@@ -73,7 +73,7 @@
 :208900009390FE90B3242F014FF7E7018188F1034D4158909390EE0290BF24909390FE9037
 :20892000B3242F02EF021C000281890F034D494E909390EE0290BF24909390FE90B3242CC6
 :2089400002EF021C000281892C0657495448494ECD8644CD888ECD85E3CD888ECD85C4CC83
-:2089600088D5894906554D2F4D4F4489FEBF24160190EE041E01EE02B324230D855C5C902B
+:2089600088D5894906554D2F4D4F4489FEBF24160190EE041E01EE02B324250D855C5C9029
 :20898000AEFFFFFF905FEF0281A611B324250572B00024988C9059594A270425F220EC5679
 :2089A000BF24855C5CFF90BE24EF02818964054D2F4D4F44CD861ACD8653CD861ACD85E3B1
 :2089C000CD852889D1CD8840CD85E3CD8852CD85C4CD85E3CD861ACD8653CD852889E5CD3F
diff --git a/build/eForth.lst b/build/eForth.lst
index 170e1d4..4896320 100644
--- a/build/eForth.lst
+++ b/build/eForth.lst
@@ -3213,7 +3213,7 @@ Hexadecimal [24-Bits]
       0008F4 1E 01            [ 2] 1797         LDW     X,(1,SP)        ; X
       0008F6 EE 02            [ 2] 1798         LDW     X,(2,X)         ; X=udh
       0008F8 B3 24            [ 2] 1799         CPW     X,YTEMP
-      0008FA 23 0D            [ 2] 1800         JRULE   MMSM1           ; X is still on the R-stack
+      0008FA 25 0D            [ 1] 1800         JRULT   MMSM1           ; X is still on the R-stack
                                    1801 ; division overflow  return q=0,r=-1 
       0008FC 85               [ 2] 1802         POPW    X
       0008FD 5C               [ 1] 1803         INCW    X               ; pop off 1 level
diff --git a/build/eForth.rel b/build/eForth.rel
index e122d73..0c66086 100644
--- a/build/eForth.rel
+++ b/build/eForth.rel
@@ -756,7 +756,7 @@ T 00 08 EB
 R 00 00 00 06
 T 00 08 EB 89 FE BF 24 16 01 90 EE 04 1E 01 EE 02
 R 00 00 00 06
-T 00 08 F8 B3 24 23 0D 85 5C 5C 90 AE FF FF FF 90
+T 00 08 F8 B3 24 25 0D 85 5C 5C 90 AE FF FF FF 90
 R 00 00 00 06
 T 00 09 05 5F EF 02 81
 R 00 00 00 06
diff --git a/build/eForth.rst b/build/eForth.rst
index 7f11b87..c24eec7 100644
--- a/build/eForth.rst
+++ b/build/eForth.rst
@@ -3213,7 +3213,7 @@ Hexadecimal [24-Bits]
       008974 1E 01            [ 2] 1797         LDW     X,(1,SP)        ; X
       008976 EE 02            [ 2] 1798         LDW     X,(2,X)         ; X=udh
       008978 B3 24            [ 2] 1799         CPW     X,YTEMP
-      00897A 23 0D            [ 2] 1800         JRULE   MMSM1           ; X is still on the R-stack
+      00897A 25 0D            [ 1] 1800         JRULT   MMSM1           ; X is still on the R-stack
                                    1801 ; division overflow  return q=0,r=-1 
       00897C 85               [ 2] 1802         POPW    X
       00897D 5C               [ 1] 1803         INCW    X               ; pop off 1 level
diff --git a/journal.md b/journal.md
index 77b7676..926e003 100644
--- a/journal.md
+++ b/journal.md
@@ -1,3 +1,7 @@
+#### 2021-02-07
+
+* Corrigé bogue autre bogue dans **UM/MOD** . Le test de débordement de la division acceptait un dividende dont la partie haute était égale au diviseur. hors une telle situation conduit à la perte du bit le plus significatif du quotient. Par exempel  0x20000 2 UM/MOD donnait 0 0 au lieu de 0 0x10000.
+
 #### 2021-02-06
 * Modification au [readme](readme.md)
 
diff --git a/stm8ef.asm b/stm8ef.asm
index 38f5292..ac1d0f5 100644
--- a/stm8ef.asm
+++ b/stm8ef.asm
@@ -1797,7 +1797,7 @@ UMMOD:
         LDW     X,(1,SP)        ; X
         LDW     X,(2,X)         ; X=udh
         CPW     X,YTEMP
-        JRULE   MMSM1           ; X is still on the R-stack
+        JRULT   MMSM1           ; X is still on the R-stack
 ; division overflow  return q=0,r=-1 
         POPW    X
         INCW    X               ; pop off 1 level