diff --git a/auto/bin/make_list.pl b/auto/bin/make_list.pl
index 5571ea9..a1eb665 100755
--- a/auto/bin/make_list.pl
+++ b/auto/bin/make_list.pl
@@ -44,10 +44,10 @@ if (@ARGV)
 
 		print "#ifdef $extname\n";
 
-                if (length($extstring))
-                {
-		        print "  CONST_CAST(" . $extvar . ") = _glewSearchExtension(\"$extstring\", start, end);\n";
-                }
+		if (length($extstring))
+		{
+				print "  CONST_CAST(" . $extvar . ") = _glewSearchExtension(\"$extstring\", extStart, extEnd);\n";
+		}
 
 		if (keys %$functions)
 		{
diff --git a/auto/src/glew_init_gl.c b/auto/src/glew_init_gl.c
index 0779939..80fa341 100644
--- a/auto/src/glew_init_gl.c
+++ b/auto/src/glew_init_gl.c
@@ -21,8 +21,8 @@ GLenum glewContextInit (GLEW_CONTEXT_ARG_DEF_LIST)
   const GLubyte* s;
   GLuint dot;
   GLint major, minor;
-  const GLubyte* start;
-  const GLubyte* end;
+  const GLubyte* extStart;
+  const GLubyte* extEnd;
   /* query opengl version */
   s = glGetString(GL_VERSION);
   dot = _glewStrCLen(s, '.');
@@ -61,9 +61,9 @@ GLenum glewContextInit (GLEW_CONTEXT_ARG_DEF_LIST)
   }
 
   /* query opengl extensions string */
-  start = glGetString(GL_EXTENSIONS);
-  if (start == 0)
-    start = (const GLubyte*)"";
-  end = start + _glewStrLen(start);
+  extStart = glGetString(GL_EXTENSIONS);
+  if (extStart == 0)
+    extStart = (const GLubyte*)"";
+  extEnd = extStart + _glewStrLen(extStart);
 
   /* initialize extensions */
diff --git a/auto/src/glew_init_glx.c b/auto/src/glew_init_glx.c
index 37bbee1..f5b393b 100644
--- a/auto/src/glew_init_glx.c
+++ b/auto/src/glew_init_glx.c
@@ -15,8 +15,8 @@ GLboolean glxewGetExtension (const char* name)
 GLenum glxewContextInit (GLXEW_CONTEXT_ARG_DEF_LIST)
 {
   int major, minor;
-  const GLubyte* start;
-  const GLubyte* end;
+  const GLubyte* extStart;
+  const GLubyte* extEnd;
   /* initialize core GLX 1.2 */
   if (_glewInit_GLX_VERSION_1_2(GLEW_CONTEXT_ARG_VAR_INIT)) return GLEW_ERROR_GLX_VERSION_11_ONLY;
   /* initialize flags */
@@ -44,10 +44,10 @@ GLenum glxewContextInit (GLXEW_CONTEXT_ARG_DEF_LIST)
     }
   }
   /* query GLX extension string */
-  start = 0;
+  extStart = 0;
   if (glXGetCurrentDisplay != NULL)
-    start = (const GLubyte*)glXGetClientString(glXGetCurrentDisplay(), GLX_EXTENSIONS);
-  if (start == 0)
-    start = (const GLubyte *)"";
-  end = start + _glewStrLen(start);
+    extStart = (const GLubyte*)glXGetClientString(glXGetCurrentDisplay(), GLX_EXTENSIONS);
+  if (extStart == 0)
+    extStart = (const GLubyte *)"";
+  extEnd = extStart + _glewStrLen(extStart);
   /* initialize extensions */
diff --git a/auto/src/glew_init_wgl.c b/auto/src/glew_init_wgl.c
index c37e084..775c02a 100644
--- a/auto/src/glew_init_wgl.c
+++ b/auto/src/glew_init_wgl.c
@@ -23,19 +23,19 @@ GLboolean wglewGetExtension (const char* name)
 GLenum wglewContextInit (WGLEW_CONTEXT_ARG_DEF_LIST)
 {
   GLboolean crippled;
-  const GLubyte* start;
-  const GLubyte* end;
+  const GLubyte* extStart;
+  const GLubyte* extEnd;
   /* find wgl extension string query functions */
   _wglewGetExtensionsStringARB = (PFNWGLGETEXTENSIONSSTRINGARBPROC)glewGetProcAddress((const GLubyte*)"wglGetExtensionsStringARB");
   _wglewGetExtensionsStringEXT = (PFNWGLGETEXTENSIONSSTRINGEXTPROC)glewGetProcAddress((const GLubyte*)"wglGetExtensionsStringEXT");
   /* query wgl extension string */
   if (_wglewGetExtensionsStringARB == NULL)
     if (_wglewGetExtensionsStringEXT == NULL)
-      start = (const GLubyte*)"";
+      extStart = (const GLubyte*)"";
     else
-      start = (const GLubyte*)_wglewGetExtensionsStringEXT();
+      extStart = (const GLubyte*)_wglewGetExtensionsStringEXT();
   else
-    start = (const GLubyte*)_wglewGetExtensionsStringARB(wglGetCurrentDC());
-  end = start + _glewStrLen(start);
+    extStart = (const GLubyte*)_wglewGetExtensionsStringARB(wglGetCurrentDC());
+  extEnd = extStart + _glewStrLen(extStart);
   /* initialize extensions */
   crippled = _wglewGetExtensionsStringARB == NULL && _wglewGetExtensionsStringEXT == NULL;