diff --git a/source/lib/sysdep/os/win/whrt/tsc.cpp b/source/lib/sysdep/os/win/whrt/tsc.cpp
index b38914de9d..7335407da3 100644
--- a/source/lib/sysdep/os/win/whrt/tsc.cpp
+++ b/source/lib/sysdep/os/win/whrt/tsc.cpp
@@ -219,7 +219,7 @@ public:
 		// clock is subject to thermal drift and would require continual
 		// recalibration anyway.
 #if ARCH_X86_X64
-		if(MSR::IsAccessible && MSR::HasNehalem())
+		if(MSR::IsAccessible() && MSR::HasNehalem())
 		{
 			const u64 platformInfo = MSR::Read(MSR::NHM_PLATFORM_INFO);
 			const u8 maxNonTurboRatio = bits(platformInfo, 8, 15);