diff --git a/include/osgFX/BumpMapping b/include/osgFX/BumpMapping
index 628b45a22..7216422dd 100644
--- a/include/osgFX/BumpMapping
+++ b/include/osgFX/BumpMapping
@@ -24,7 +24,7 @@
 namespace osgFX
 {
 
-	/**
+    /**
      This effect makes surfaces appear bumpy. Children nodes must use two textures, 
      one for diffuse color and one for the normal map (which can be created 
      from a height map with tools like nVIDIA's normal map generator). Furthermore, 
@@ -120,10 +120,10 @@ namespace osgFX
 
     private:
         int lightnum_;
-		int diffuseunit_;
-		int normalunit_;
-		osg::ref_ptr<osg::Texture2D> diffuse_tex_;
-		osg::ref_ptr<osg::Texture2D> normal_tex_;
+        int diffuseunit_;
+        int normalunit_;
+        osg::ref_ptr<osg::Texture2D> diffuse_tex_;
+        osg::ref_ptr<osg::Texture2D> normal_tex_;
     };
 
     // INLINE METHODS    
@@ -141,56 +141,56 @@ namespace osgFX
     
     inline int BumpMapping::getDiffuseTextureUnit() const
     {
-		return diffuseunit_;
+        return diffuseunit_;
     }
     
     inline void BumpMapping::setDiffuseTextureUnit(int n)
     {
-		diffuseunit_ = n;
-		dirtyTechniques();
+        diffuseunit_ = n;
+        dirtyTechniques();
     }
     
     inline int BumpMapping::getNormalMapTextureUnit() const
     {
-		return normalunit_;
+        return normalunit_;
     }
     
     inline void BumpMapping::setNormalMapTextureUnit(int n)
     {
-		normalunit_ = n;
-		dirtyTechniques();
+        normalunit_ = n;
+        dirtyTechniques();
     }
     
     inline osg::Texture2D *BumpMapping::getOverrideDiffuseTexture()
     {
-		return diffuse_tex_.get();
+        return diffuse_tex_.get();
     }
 
     inline const osg::Texture2D *BumpMapping::getOverrideDiffuseTexture() const
     {
-		return diffuse_tex_.get();
+        return diffuse_tex_.get();
     }
     
     inline void BumpMapping::setOverrideDiffuseTexture(osg::Texture2D *texture)
     {
-		diffuse_tex_ = texture;
-		dirtyTechniques();
+        diffuse_tex_ = texture;
+        dirtyTechniques();
     }
 
     inline osg::Texture2D *BumpMapping::getOverrideNormalMapTexture()
     {
-		return normal_tex_.get();
+        return normal_tex_.get();
     }
 
     inline const osg::Texture2D *BumpMapping::getOverrideNormalMapTexture() const
     {
-		return normal_tex_.get();
+        return normal_tex_.get();
     }
     
     inline void BumpMapping::setOverrideNormalMapTexture(osg::Texture2D *texture)
     {
-		normal_tex_ = texture;
-		dirtyTechniques();
+        normal_tex_ = texture;
+        dirtyTechniques();
     }
 
 }
diff --git a/include/osgFX/Effect b/include/osgFX/Effect
index 0e5a0a50d..ea6da219b 100644
--- a/include/osgFX/Effect
+++ b/include/osgFX/Effect
@@ -113,7 +113,7 @@ namespace osgFX
         /** select a technique or enable automatic detection */
         inline void selectTechnique(int i = AUTO_DETECT);
 
-		/** custom traversal */
+        /** custom traversal */
         virtual void traverse(osg::NodeVisitor &nv);        
 
         /** default traversal */
@@ -208,8 +208,8 @@ namespace osgFX
     
     inline void Effect::inherited_traverse(osg::NodeVisitor &nv)
     {
-		typedef osg::Group inherited;
-		inherited::traverse(nv);
+        typedef osg::Group inherited;
+        inherited::traverse(nv);
     }
 
 }
diff --git a/include/osgFX/Technique b/include/osgFX/Technique
index e15b61ac7..d2d635f14 100644
--- a/include/osgFX/Technique
+++ b/include/osgFX/Technique
@@ -37,7 +37,7 @@
 namespace osgFX
 {
 
-	class Effect;
+    class Effect;
 
     /**
      This is the base class for effect techniques. A technique represents one
@@ -115,10 +115,10 @@ namespace osgFX
          */
         virtual void define_passes() = 0;
         
-		/**
-		 traverse children with multipass if necessary. Don't call this method
-		 directly unless you are in a customized version of traverse().
-		 */
+        /**
+         traverse children with multipass if necessary. Don't call this method
+         directly unless you are in a customized version of traverse().
+         */
         void traverse_implementation(osg::NodeVisitor &nv, Effect *fx);
 
     private:
@@ -150,7 +150,7 @@ namespace osgFX
     
     inline void Technique::traverse(osg::NodeVisitor &nv, Effect *fx)
     {
-		traverse_implementation(nv, fx);
+        traverse_implementation(nv, fx);
     }
 
 }
diff --git a/include/osgFX/Validator b/include/osgFX/Validator
index a4476ed8c..9812a0e25 100644
--- a/include/osgFX/Validator
+++ b/include/osgFX/Validator
@@ -34,10 +34,10 @@ namespace osgFX
      */
     class OSGFX_EXPORT Validator: public osg::StateAttribute {
     public:
-		enum {
-			VALIDATOR = 0x56616C69
-		};
-		
+        enum {
+            VALIDATOR = 0x56616C69
+        };
+        
         Validator();
         Validator(Effect *effect);
         Validator(const Validator &copy, const osg::CopyOp &copyop = osg::CopyOp::SHALLOW_COPY);