diff --git a/src/osgPlugins/tga/ReaderWriterTGA.cpp b/src/osgPlugins/tga/ReaderWriterTGA.cpp
index 861c61b70..53da479ac 100644
--- a/src/osgPlugins/tga/ReaderWriterTGA.cpp
+++ b/src/osgPlugins/tga/ReaderWriterTGA.cpp
@@ -564,16 +564,17 @@ class ReaderWriterTGA : public osgDB::ReaderWriter
             int t = height_ret;
             int r = 1;
 
-            int internalFormat = numComponents_ret;
-
             unsigned int pixelFormat =
                 numComponents_ret == 1 ? GL_LUMINANCE :
-            numComponents_ret == 2 ? GL_LUMINANCE_ALPHA :
-            numComponents_ret == 3 ? GL_RGB :
-            numComponents_ret == 4 ? GL_RGBA : (GLenum)-1;
+                numComponents_ret == 2 ? GL_LUMINANCE_ALPHA :
+                numComponents_ret == 3 ? GL_RGB :
+                numComponents_ret == 4 ? GL_RGBA : (GLenum)-1;
+
+            int internalFormat = pixelFormat;
 
             unsigned int dataType = GL_UNSIGNED_BYTE;
 
+
             osg::Image* pOsgImage = new osg::Image;
             pOsgImage->setImage(s,t,r,
                 internalFormat,