The reason for i in huji

"Jerusalem, Israel" is kind of an obscure place so it needs to be differentiated from all of these places:

United States

• Jerusalem, Arkansas, unincorporated community in Conway County
• Jerusalem, Baltimore County, Maryland, unincorporated community
  • Jerusalem Mill Village, living history museum in Maryland
• Jerusalem, Michigan, an unincorporated community
• Jerusalem, New York, town in Yates County
• Jerusalem, Ohio, village in Monroe County
• Jerusalem, Rhode Island, an unincorporated village in the incorporated town of Narragansett in Washington County
• Jerusalem, Virginia, former name of Courtland, a town in Southampton County
• Jerusalem and Figtree Hill, U.S. Virgin Islands
• Jerusalem Township, Lucas County, Ohio

New Zealand

• Jerusalem, New Zealand, also known as Hiruharama, a village in the Manawatu-Whanganui Region
• Hiruharama, a transliteration of "Jerusalem", a village in the Gisborne District

Other places

• Colebrook, Tasmania was also known as Jerusalem in the 19th century.
• Jerusalem of Lithuania, a medieval nickname for Vilnius, Lithuania for it being a cultural center of Litvak Jews
• Jerusalem (Vilnius) [lt], Vilnius city part
• Jerusalem, Lincolnshire, a village in England
• Jeruzalem, Ljutomer, a village in Slovenia
• Jeruzalem, Pomeranian Voivodeship, a village in Poland
• Jerusalem (Königsberg), a former quarter of Königsberg, Prussia
• Jerusalem, a village and administrative part of Příbram, Czech Republic
• Yerusalimka or Ierusalimka, a Jewish quarter of the town of Vinnytsia
• Jeruzalem, a restaurant in Delft, Netherlands

Plus it's more fun to say than HUJ.