diff --git a/changes.txt b/changes.txt
index b6045624..a44ed7ee 100644
--- a/changes.txt
+++ b/changes.txt
@@ -1,5 +1,7 @@
 Changes in version 1.3.1 (?? Mar 2007)
 
+ - Fixed a bug with negative exponents in fast_atof, posted by RVL
+
  - renamed IAnimatedMeshSceneNode::getAbsoluteTransformation to getMD3TagTransformation
    to avoid conflicts with ISceneNode::getAbsoluteTransformation
 
diff --git a/include/fast_atof.h b/include/fast_atof.h
index 7a4f10e9..fadef58c 100644
--- a/include/fast_atof.h
+++ b/include/fast_atof.h
@@ -86,8 +86,14 @@ inline const char* fast_atof_move( const char* c, float& out)
 		{
 			++c;
 			//float exp = (float)strtol(c, &t, 10);
+			bool einv = (*c=='-');
+			if (einv)
+				c++;
+
 			float exp = (float)strtol10(c, t);
-			
+			if (einv)
+				exp *= -1.0f;
+
 			f *= (float)pow(10.0f, exp);
 			c = t;
 		}