diff --git a/Data/AEq.hs b/Data/AEq.hs
--- a/Data/AEq.hs
+++ b/Data/AEq.hs
@@ -74,7 +74,7 @@
 approxEqIEEE :: (IEEE a) => a -> a -> Bool
 approxEqIEEE x y =
     ( sameSignificandBits x y >= d
-    || (x < epsilon && y < epsilon)
+    || (abs x < epsilon && abs y < epsilon)
     || (isNaN x && isNaN y)
     )
   where
diff --git a/NEWS b/NEWS
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,8 @@
+Changes in 0.7.3:
+
+* Bugfix from Björn Buckwalter: any two negative values were aproxEqIEEE
+
+
 Changes in 0.7.2:
 
 * Fix aliasing warnings in C code
diff --git a/ieee754.cabal b/ieee754.cabal
--- a/ieee754.cabal
+++ b/ieee754.cabal
@@ -1,5 +1,5 @@
 name:            ieee754
-version:         0.7.2
+version:         0.7.3
 homepage:        http://github.com/patperry/hs-ieee754
 synopsis:        Utilities for dealing with IEEE floating point numbers
 description:
@@ -9,7 +9,7 @@
 category:        Math
 license:         BSD3
 license-file:    LICENSE
-copyright:       (c) 2010. Patrick Perry <patperry@gmail.com>
+copyright:       (c) 2011. Patrick Perry <patperry@gmail.com>
 author:          Patrick Perry
 maintainer:      Patrick Perry <patperry@gmail.com>
 cabal-version: >= 1.2.0