diff --git a/glm/ext/matrix_transform.inl b/glm/ext/matrix_transform.inl
index 5037ec1b..e5f0abe0 100644
--- a/glm/ext/matrix_transform.inl
+++ b/glm/ext/matrix_transform.inl
@@ -144,7 +144,7 @@ namespace glm
 	template<typename T, qualifier Q>
 	GLM_FUNC_QUALIFIER mat<4, 4, T, Q> lookAt(vec<3, T, Q> const& eye, vec<3, T, Q> const& center, vec<3, T, Q> const& up)
 	{
-		if(GLM_CONFIG_CLIP_CONTROL & GLM_CLIP_CONTROL_LH_BIT)
+		if GLM_CONSTEXPR(GLM_CONFIG_CLIP_CONTROL & GLM_CLIP_CONTROL_LH_BIT)
 			return lookAtLH(eye, center, up);
 		else
 			return lookAtRH(eye, center, up);