diff --git a/glm/detail/func_trigonometric.inl b/glm/detail/func_trigonometric.inl
index dacd0eee..1e70158d 100644
--- a/glm/detail/func_trigonometric.inl
+++ b/glm/detail/func_trigonometric.inl
@@ -210,7 +210,7 @@ namespace glm
 		{
 			GLM_STATIC_ASSERT(std::numeric_limits<genType>::is_iec559, "'atanh' only accept floating-point input");
 		
-			if(abs(x) >= static_cast<genType>(1))
+			if(std::abs(x) >= static_cast<genType>(1))
 				return 0;
 			return static_cast<genType>(0.5) * log((static_cast<genType>(1) + x) / (static_cast<genType>(1) - x));
 		}
diff --git a/readme.md b/readme.md
index f422d084..a044dd14 100644
--- a/readme.md
+++ b/readme.md
@@ -53,7 +53,7 @@ glm::mat4 camera(float Translate, glm::vec2 const & Rotate)
 
 #### [GLM 0.9.7.4](https://github.com/g-truc/glm/tree/0.9.7) - 2016-XX-XX
 ##### Fixes:
-- Fixed asinh warning with C++98 STL #484
+- Fixed asinh and atanh warning with C++98 STL #484
 
 #### [GLM 0.9.7.3](https://github.com/g-truc/glm/releases/tag/0.9.7.3) - 2016-02-21
 ##### Improvements: