diff --git a/Source/Core/VideoCommon/LookUpTables.h b/Source/Core/VideoCommon/LookUpTables.h
index d821597c8f..4bda199be5 100644
--- a/Source/Core/VideoCommon/LookUpTables.h
+++ b/Source/Core/VideoCommon/LookUpTables.h
@@ -6,25 +6,25 @@
 
 #include "Common/CommonTypes.h"
 
-inline u8 Convert3To8(u8 v)
+constexpr u8 Convert3To8(u8 v)
 {
 	// Swizzle bits: 00000123 -> 12312312
 	return (v << 5) | (v << 2) | (v >> 1);
 }
 
-inline u8 Convert4To8(u8 v)
+constexpr u8 Convert4To8(u8 v)
 {
 	// Swizzle bits: 00001234 -> 12341234
 	return (v << 4) | v;
 }
 
-inline u8 Convert5To8(u8 v)
+constexpr u8 Convert5To8(u8 v)
 {
 	// Swizzle bits: 00012345 -> 12345123
 	return (v << 3) | (v >> 2);
 }
 
-inline u8 Convert6To8(u8 v)
+constexpr u8 Convert6To8(u8 v)
 {
 	// Swizzle bits: 00123456 -> 12345612
 	return (v << 2) | (v >> 4);