diff --git a/MoltenVK/MoltenVK/GPUObjects/MVKDevice.mm b/MoltenVK/MoltenVK/GPUObjects/MVKDevice.mm
index 14e62ba..4c712b8 100644
--- a/MoltenVK/MoltenVK/GPUObjects/MVKDevice.mm
+++ b/MoltenVK/MoltenVK/GPUObjects/MVKDevice.mm
@@ -2456,7 +2456,7 @@
 		float fosMaj, fosMin;
 		fosMin = modf(mvkOSVersion(), &fosMaj);
 		uint8_t osMaj = (uint8_t)fosMaj;
-		uint8_t osMin = (uint8_t)(fosMin * 255);
+		uint8_t osMin = (uint8_t)(fosMin * 100);
 		return (osMaj << 24) + (osMin << 16) + (uint16_t)gpuFam;
 	}