diff --git a/src/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/BootGodDB.cs b/src/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/BootGodDB.cs
index 969c95f157..b71f28f367 100644
--- a/src/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/BootGodDB.cs
+++ b/src/BizHawk.Emulation.Cores/Consoles/Nintendo/NES/BootGodDB.cs
@@ -136,7 +136,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
 						{
 							currCart = new CartInfo();
 							currCart.System = xmlReader.GetAttribute("system");
-							currCart.Sha1 = $"SHA1:{xmlReader.GetAttribute("sha1")}";
+							currCart.Sha1 = $"{SHA1Checksum.PREFIX}:{xmlReader.GetAttribute("sha1")}";
 							currCart.Name = currName;
 							state = 2;
 						}
diff --git a/src/BizHawk.Emulation.Cores/Consoles/Nintendo/QuickNES/QuickNES.cs b/src/BizHawk.Emulation.Cores/Consoles/Nintendo/QuickNES/QuickNES.cs
index c817c5f3b6..78e3e52481 100644
--- a/src/BizHawk.Emulation.Cores/Consoles/Nintendo/QuickNES/QuickNES.cs
+++ b/src/BizHawk.Emulation.Cores/Consoles/Nintendo/QuickNES/QuickNES.cs
@@ -285,7 +285,7 @@ namespace BizHawk.Emulation.Cores.Consoles.Nintendo.QuickNES
 				throw new UnsupportedGameException("Game known to not be playable in this core");
 			}
 
-			sha1 = "sha1:" + sha1; // huh?
+			sha1 = $"{SHA1Checksum.PREFIX}:{sha1}";
 			var carts = BootGodDb.Identify(sha1);
 
 			if (carts.Count > 0)