diff --git a/gaseous-server/Classes/Bios.cs b/gaseous-server/Classes/Bios.cs
index 0a75938..aaf21c4 100644
--- a/gaseous-server/Classes/Bios.cs
+++ b/gaseous-server/Classes/Bios.cs
@@ -79,7 +79,7 @@ namespace gaseous_server.Classes
                             platformname = platform.Name,
                             description = emulatorBios.description,
                             filename = emulatorBios.filename,
-                            hash = emulatorBios.hash
+                            hash = emulatorBios.hash.ToLower()
                         };
                         biosItems.Add(biosItem);
                     }
diff --git a/gaseous-server/Classes/Roms.cs b/gaseous-server/Classes/Roms.cs
index 143a987..2f65b40 100644
--- a/gaseous-server/Classes/Roms.cs
+++ b/gaseous-server/Classes/Roms.cs
@@ -103,9 +103,9 @@ namespace gaseous_server.Classes
                 GameId = (long)romDR["gameid"],
                 Name = (string)romDR["name"],
                 Size = (long)romDR["size"],
-                CRC = (string)romDR["crc"],
-                MD5 = (string)romDR["md5"],
-                SHA1 = (string)romDR["sha1"],
+                CRC = ((string)romDR["crc"]).ToLower(),
+                MD5 = ((string)romDR["md5"]).ToLower(),
+                SHA1 = ((string)romDR["sha1"]).ToLower(),
                 DevelopmentStatus = (string)romDR["developmentstatus"],
                 Attributes = Newtonsoft.Json.JsonConvert.DeserializeObject<List<KeyValuePair<string, object>>>((string)Common.ReturnValueIfNull(romDR["attributes"], "[ ]")),
                 RomType = (int)romDR["romtype"],
diff --git a/gaseous-server/Classes/SignatureIngestors/XML.cs b/gaseous-server/Classes/SignatureIngestors/XML.cs
index a44845c..288e8f7 100644
--- a/gaseous-server/Classes/SignatureIngestors/XML.cs
+++ b/gaseous-server/Classes/SignatureIngestors/XML.cs
@@ -188,9 +188,9 @@ namespace gaseous_server.SignatureIngestors.XML
                                             dbDict.Add("gameid", gameId);
                                             dbDict.Add("name", Common.ReturnValueIfNull(romObject.Name, ""));
                                             dbDict.Add("size", Common.ReturnValueIfNull(romObject.Size, ""));
-                                            dbDict.Add("crc", Common.ReturnValueIfNull(romObject.Crc, ""));
-                                            dbDict.Add("md5", Common.ReturnValueIfNull(romObject.Md5, ""));
-                                            dbDict.Add("sha1", Common.ReturnValueIfNull(romObject.Sha1, ""));
+                                            dbDict.Add("crc", Common.ReturnValueIfNull(romObject.Crc, "").ToString().ToLower());
+                                            dbDict.Add("md5", Common.ReturnValueIfNull(romObject.Md5, "").ToString().ToLower());
+                                            dbDict.Add("sha1", Common.ReturnValueIfNull(romObject.Sha1, "").ToString().ToLower());
                                             dbDict.Add("developmentstatus", Common.ReturnValueIfNull(romObject.DevelopmentStatus, ""));
 
                                             if (romObject.Attributes != null)
diff --git a/gaseous-server/Controllers/SignaturesController.cs b/gaseous-server/Controllers/SignaturesController.cs
index 89b720a..e9bab60 100644
--- a/gaseous-server/Controllers/SignaturesController.cs
+++ b/gaseous-server/Controllers/SignaturesController.cs
@@ -88,8 +88,8 @@ namespace gaseous_server.Controllers
                         Name = (string)sigDbRow["romname"],
                         Size = (Int64)sigDbRow["Size"],
                         Crc = (string)sigDbRow["CRC"],
-                        Md5 = (string)sigDbRow["MD5"],
-                        Sha1 = (string)sigDbRow["SHA1"],
+                        Md5 = ((string)sigDbRow["MD5"]).ToLower(),
+                        Sha1 = ((string)sigDbRow["SHA1"]).ToLower(),
                         DevelopmentStatus = (string)sigDbRow["DevelopmentStatus"],
                         Attributes = Newtonsoft.Json.JsonConvert.DeserializeObject<List<KeyValuePair<string, object>>>((string)Common.ReturnValueIfNull(sigDbRow["Attributes"], "[]")),
                         RomType = (Models.Signatures_Games.RomItem.RomTypes)(int)sigDbRow["RomType"],
diff --git a/gaseous-server/Models/PlatformMapping.cs b/gaseous-server/Models/PlatformMapping.cs
index 62afbf2..2871ee1 100644
--- a/gaseous-server/Models/PlatformMapping.cs
+++ b/gaseous-server/Models/PlatformMapping.cs
@@ -286,7 +286,7 @@ namespace gaseous_server.Models
                 {
                     filename = (string)Common.ReturnValueIfNull(biosRow["Filename"], ""),
                     description = (string)Common.ReturnValueIfNull(biosRow["Description"], ""),
-                    hash = (string)Common.ReturnValueIfNull(biosRow["Hash"], "")
+                    hash = ((string)Common.ReturnValueIfNull(biosRow["Hash"], "")).ToLower()
                 };
                 bioss.Add(bios);
             }
diff --git a/gaseous-tools/Common.cs b/gaseous-tools/Common.cs
index bf077bb..257b506 100644
--- a/gaseous-tools/Common.cs
+++ b/gaseous-tools/Common.cs
@@ -61,7 +61,7 @@ namespace gaseous_tools
 			{
 				get
 				{
-					return _md5hash;
+					return _md5hash.ToLower();
 				}
 				set
 				{
@@ -73,7 +73,7 @@ namespace gaseous_tools
 			{
 				get
 				{
-					return _sha1hash;
+					return _sha1hash.ToLower();
 				}
 				set
 				{