diff --git a/lib/fast486/opcodes.c b/lib/fast486/opcodes.c
index de75b50a2ee..a3e16644001 100644
--- a/lib/fast486/opcodes.c
+++ b/lib/fast486/opcodes.c
@@ -5885,6 +5885,18 @@ FAST486_OPCODE_HANDLER(Fast486OpcodeLods)
             if (AddressSize) State->GeneralRegs[FAST486_REG_ESI].Long -= (Count - 1) * DataSize;
             else State->GeneralRegs[FAST486_REG_ESI].LowWord -= (Count - 1) * DataSize;
         }
+
+        /* Update registers */
+        if (OperandSize)
+        {
+            State->GeneralRegs[FAST486_REG_ECX].Long = 0;
+            State->GeneralRegs[FAST486_REG_ESI].Long += Count - 1;
+        }
+        else
+        {
+            State->GeneralRegs[FAST486_REG_ECX].LowWord = 0;
+            State->GeneralRegs[FAST486_REG_ESI].LowWord += Count - 1;
+        }
     }
 
     /* Read from the source operand */