diff --git a/Data/Abbr/IATA_airport_codes.csv b/Data/abbr/IATA_airport_codes.csv
similarity index 100%
rename from Data/Abbr/IATA_airport_codes.csv
rename to Data/abbr/IATA_airport_codes.csv
diff --git a/Data/Abbr/ICAO_airport_codes.csv b/Data/abbr/ICAO_airport_codes.csv
similarity index 100%
rename from Data/Abbr/ICAO_airport_codes.csv
rename to Data/abbr/ICAO_airport_codes.csv
diff --git a/Data/Abbr/ICD-10_diagnosis_codes.csv b/Data/abbr/ICD-10_diagnosis_codes.csv
similarity index 100%
rename from Data/Abbr/ICD-10_diagnosis_codes.csv
rename to Data/abbr/ICD-10_diagnosis_codes.csv
diff --git a/Data/Abbr/ISO_country_codes.csv b/Data/abbr/ISO_country_codes.csv
similarity index 100%
rename from Data/Abbr/ISO_country_codes.csv
rename to Data/abbr/ISO_country_codes.csv
diff --git a/Data/Abbr/ISO_currency_codes.csv b/Data/abbr/ISO_currency_codes.csv
similarity index 100%
rename from Data/Abbr/ISO_currency_codes.csv
rename to Data/abbr/ISO_currency_codes.csv
diff --git a/Data/Abbr/ISO_language_codes.csv b/Data/abbr/ISO_language_codes.csv
similarity index 100%
rename from Data/Abbr/ISO_language_codes.csv
rename to Data/abbr/ISO_language_codes.csv
diff --git a/Data/Abbr/SI_prefixes.csv b/Data/abbr/SI_prefixes.csv
similarity index 100%
rename from Data/Abbr/SI_prefixes.csv
rename to Data/abbr/SI_prefixes.csv
diff --git a/Data/Abbr/astronomy.csv b/Data/abbr/astronomy.csv
similarity index 100%
rename from Data/Abbr/astronomy.csv
rename to Data/abbr/astronomy.csv
diff --git a/Data/Abbr/aviation.csv b/Data/abbr/aviation.csv
similarity index 100%
rename from Data/Abbr/aviation.csv
rename to Data/abbr/aviation.csv
diff --git a/Data/Abbr/biology.csv b/Data/abbr/biology.csv
similarity index 100%
rename from Data/Abbr/biology.csv
rename to Data/abbr/biology.csv
diff --git a/Data/Abbr/chemistry.csv b/Data/abbr/chemistry.csv
similarity index 100%
rename from Data/Abbr/chemistry.csv
rename to Data/abbr/chemistry.csv
diff --git a/Data/Abbr/color_names.csv b/Data/abbr/color_names.csv
similarity index 100%
rename from Data/Abbr/color_names.csv
rename to Data/abbr/color_names.csv
diff --git a/Data/Abbr/companies.csv b/Data/abbr/companies.csv
similarity index 100%
rename from Data/Abbr/companies.csv
rename to Data/abbr/companies.csv
diff --git a/Data/Abbr/computing.csv b/Data/abbr/computing.csv
similarity index 100%
rename from Data/Abbr/computing.csv
rename to Data/abbr/computing.csv
diff --git a/Data/Abbr/cooking.csv b/Data/abbr/cooking.csv
similarity index 100%
rename from Data/Abbr/cooking.csv
rename to Data/abbr/cooking.csv
diff --git a/Data/Abbr/financial.csv b/Data/abbr/financial.csv
similarity index 100%
rename from Data/Abbr/financial.csv
rename to Data/abbr/financial.csv
diff --git a/Data/Abbr/general.csv b/Data/abbr/general.csv
similarity index 100%
rename from Data/Abbr/general.csv
rename to Data/abbr/general.csv
diff --git a/Data/Abbr/geography.csv b/Data/abbr/geography.csv
similarity index 100%
rename from Data/Abbr/geography.csv
rename to Data/abbr/geography.csv
diff --git a/Data/Abbr/history.csv b/Data/abbr/history.csv
similarity index 100%
rename from Data/Abbr/history.csv
rename to Data/abbr/history.csv
diff --git a/Data/Abbr/mathematics.csv b/Data/abbr/mathematics.csv
similarity index 100%
rename from Data/Abbr/mathematics.csv
rename to Data/abbr/mathematics.csv
diff --git a/Data/Abbr/medical.csv b/Data/abbr/medical.csv
similarity index 100%
rename from Data/Abbr/medical.csv
rename to Data/abbr/medical.csv
diff --git a/Data/Abbr/military.csv b/Data/abbr/military.csv
similarity index 100%
rename from Data/Abbr/military.csv
rename to Data/abbr/military.csv
diff --git a/Data/Abbr/music.csv b/Data/abbr/music.csv
similarity index 100%
rename from Data/Abbr/music.csv
rename to Data/abbr/music.csv
diff --git a/Data/Abbr/organizations.csv b/Data/abbr/organizations.csv
similarity index 100%
rename from Data/Abbr/organizations.csv
rename to Data/abbr/organizations.csv
diff --git a/Data/Abbr/sports.csv b/Data/abbr/sports.csv
similarity index 100%
rename from Data/Abbr/sports.csv
rename to Data/abbr/sports.csv
diff --git a/Scripts/what-is.ps1 b/Scripts/what-is.ps1
index 788874872..ef47828c8 100755
--- a/Scripts/what-is.ps1
+++ b/Scripts/what-is.ps1
@@ -18,7 +18,7 @@ param([string]$abbr = "")
 
 try {
 	if ($abbr -eq "" ) { $abbr = Read-Host "Enter the abbreviation to query" }
-	$files = (Get-ChildItem "$PSScriptRoot/../Data/Abbr/*.csv")
+	$files = (Get-ChildItem "$PSScriptRoot/../Data/abbr/*.csv")
 	$basename = ""
 	foreach($file in $files) {
 		$table = Import-CSV "$file"