diff --git a/Kernel/Devices/Storage/NVMe/NVMeDefinitions.h b/Kernel/Devices/Storage/NVMe/NVMeDefinitions.h
index 8e541e263ec..b97387fcf4e 100644
--- a/Kernel/Devices/Storage/NVMe/NVMeDefinitions.h
+++ b/Kernel/Devices/Storage/NVMe/NVMeDefinitions.h
@@ -53,7 +53,7 @@ static constexpr u16 ID_CTRL_SHADOW_DBBUF_MASK = 0x0100;
 static constexpr u8 CAP_DBL_SHIFT = 32;
 static constexpr u8 CAP_DBL_MASK = 0xf;
 static constexpr u8 CAP_TO_SHIFT = 24;
-static constexpr u64 CAP_TO_MASK = 0xff << CAP_TO_SHIFT;
+static constexpr u64 CAP_TO_MASK = 0xffu << CAP_TO_SHIFT;
 static constexpr u32 MQES(u64 cap)
 {
     return (cap & 0xffff) + 1;