diff --git a/include/zeus/CAABox.hpp b/include/zeus/CAABox.hpp
index dac571c..58c893f 100644
--- a/include/zeus/CAABox.hpp
+++ b/include/zeus/CAABox.hpp
@@ -309,8 +309,8 @@ public:
       return max[idx - 3];
   }
 };
-constexpr CAABox skInvertedBox;
-constexpr CAABox skNullBox(CVector3f{}, CVector3f{});
+constexpr inline CAABox skInvertedBox;
+constexpr inline CAABox skNullBox(CVector3f{}, CVector3f{});
 
 [[nodiscard]] inline bool operator==(const CAABox& left, const CAABox& right) {
   return (left.min == right.min && left.max == right.max);
diff --git a/include/zeus/CColor.hpp b/include/zeus/CColor.hpp
index ab64d47..c1a62d1 100644
--- a/include/zeus/CColor.hpp
+++ b/include/zeus/CColor.hpp
@@ -310,18 +310,18 @@ constexpr CVector4f& CVector4f::operator=(const CColor& other) {
   return *this;
 }
 
-constexpr CColor skRed(1.f, 0.f, 0.f, 1.f);
-constexpr CColor skBlack(0.f, 0.f, 0.f, 1.f);
-constexpr CColor skBlue(0.f, 0.f, 1.f, 1.f);
-constexpr CColor skCyan(0.f, 1.f, 1.f, 1.f);
-constexpr CColor skGreen(0.f, 1.f, 0.f, 1.f);
-constexpr CColor skGrey(0.5f, 0.5f, 0.5f, 1.f);
-constexpr CColor skMagenta(1.f, 0.f, 1.f, 1.f);
-constexpr CColor skOrange(1.f, 0.43f, 0.f, 1.f);
-constexpr CColor skPurple(0.63f, 0.f, 1.f, 1.f);
-constexpr CColor skYellow(1.f, 1.f, 0.f, 1.f);
-constexpr CColor skWhite(1.f, 1.f, 1.f, 1.f);
-constexpr CColor skClear(0.f, 0.f, 0.f, 0.f);
+constexpr inline CColor skRed(1.f, 0.f, 0.f, 1.f);
+constexpr inline CColor skBlack(0.f, 0.f, 0.f, 1.f);
+constexpr inline CColor skBlue(0.f, 0.f, 1.f, 1.f);
+constexpr inline CColor skCyan(0.f, 1.f, 1.f, 1.f);
+constexpr inline CColor skGreen(0.f, 1.f, 0.f, 1.f);
+constexpr inline CColor skGrey(0.5f, 0.5f, 0.5f, 1.f);
+constexpr inline CColor skMagenta(1.f, 0.f, 1.f, 1.f);
+constexpr inline CColor skOrange(1.f, 0.43f, 0.f, 1.f);
+constexpr inline CColor skPurple(0.63f, 0.f, 1.f, 1.f);
+constexpr inline CColor skYellow(1.f, 1.f, 0.f, 1.f);
+constexpr inline CColor skWhite(1.f, 1.f, 1.f, 1.f);
+constexpr inline CColor skClear(0.f, 0.f, 0.f, 0.f);
 
 [[nodiscard]] inline CColor operator+(float lhs, const CColor& rhs) {
   return CColor(simd<float>(lhs) + rhs.mSimd).Clamp();
diff --git a/include/zeus/CVector2f.hpp b/include/zeus/CVector2f.hpp
index 266cae1..b05c9d2 100644
--- a/include/zeus/CVector2f.hpp
+++ b/include/zeus/CVector2f.hpp
@@ -207,9 +207,9 @@ public:
   [[nodiscard]] simd<float>::reference x() { return mSimd[0]; }
   [[nodiscard]] simd<float>::reference y() { return mSimd[1]; }
 };
-constexpr CVector2f skOne2f(1.f);
-constexpr CVector2f skNegOne2f(-1.f);
-constexpr CVector2f skZero2f(0.f);
+constexpr inline CVector2f skOne2f(1.f);
+constexpr inline CVector2f skNegOne2f(-1.f);
+constexpr inline CVector2f skZero2f(0.f);
 
 [[nodiscard]] inline CVector2f operator+(float lhs, const CVector2f& rhs) { return zeus::simd<float>(lhs) + rhs.mSimd; }
 
diff --git a/include/zeus/CVector3d.hpp b/include/zeus/CVector3d.hpp
index 9b0918a..943caf0 100644
--- a/include/zeus/CVector3d.hpp
+++ b/include/zeus/CVector3d.hpp
@@ -79,7 +79,7 @@ public:
 };
 inline CVector3f::CVector3f(const CVector3d& vec) : mSimd(vec.mSimd) {}
 
-constexpr CVector3d skZero3d(0.0);
+constexpr inline CVector3d skZero3d(0.0);
 
 [[nodiscard]] inline CVector3d operator+(double lhs, const CVector3d& rhs) {
   return zeus::simd<double>(lhs) + rhs.mSimd;
diff --git a/include/zeus/CVector3f.hpp b/include/zeus/CVector3f.hpp
index bed85d3..c755065 100644
--- a/include/zeus/CVector3f.hpp
+++ b/include/zeus/CVector3f.hpp
@@ -209,17 +209,17 @@ public:
 
   [[nodiscard]] static inline CVector3f degToRad(const CVector3f& deg);
 };
-constexpr CVector3f skOne3f(1.f);
-constexpr CVector3f skNegOne3f(-1.f);
-constexpr CVector3f skZero3f(0.f);
-constexpr CVector3f skForward(0.f, 1.f, 0.f);
-constexpr CVector3f skBack(0.f, -1.f, 0.f);
-constexpr CVector3f skLeft(-1.f, 0.f, 0.f);
-constexpr CVector3f skRight(1.f, 0.f, 0.f);
-constexpr CVector3f skUp(0.f, 0.f, 1.f);
-constexpr CVector3f skDown(0.f, 0.f, -1.f);
-constexpr CVector3f skRadToDegVec(180.f / M_PIF);
-constexpr CVector3f skDegToRadVec(M_PIF / 180.f);
+constexpr inline CVector3f skOne3f(1.f);
+constexpr inline CVector3f skNegOne3f(-1.f);
+constexpr inline CVector3f skZero3f(0.f);
+constexpr inline CVector3f skForward(0.f, 1.f, 0.f);
+constexpr inline CVector3f skBack(0.f, -1.f, 0.f);
+constexpr inline CVector3f skLeft(-1.f, 0.f, 0.f);
+constexpr inline CVector3f skRight(1.f, 0.f, 0.f);
+constexpr inline CVector3f skUp(0.f, 0.f, 1.f);
+constexpr inline CVector3f skDown(0.f, 0.f, -1.f);
+constexpr inline CVector3f skRadToDegVec(180.f / M_PIF);
+constexpr inline CVector3f skDegToRadVec(M_PIF / 180.f);
 
 [[nodiscard]] inline CVector3f operator+(float lhs, const CVector3f& rhs) { return zeus::simd<float>(lhs) + rhs.mSimd; }