diff --git a/src/BizHawk.Client.Common/movie/PlatformFrameRates.cs b/src/BizHawk.Client.Common/movie/PlatformFrameRates.cs
index 773f7d8785..15fa7db059 100644
--- a/src/BizHawk.Client.Common/movie/PlatformFrameRates.cs
+++ b/src/BizHawk.Client.Common/movie/PlatformFrameRates.cs
@@ -74,8 +74,8 @@ namespace BizHawk.Client.Common
 			["AmstradCPC_PAL"] = 50.08012820512821,
 			["UZE"] = 60.016319939602,
 			["VEC"] = 50,
-			["O2"] = 89478485 / 1495643, // 59.8260982065907439141559850846
-			["O2_PAL"] = 89478485 / 1800319, // 49.70146124103561646574857011
+			["O2"] = 89478485.0 / 1495643, // 59.8260982065907439141559850846
+			["O2_PAL"] = 89478485.0 / 1800319, // 49.70146124103561646574857011
 
 			["TIC80"] = 60,
 		};