diff --git a/src/mesa/drivers/dri/i915/intel_pixel.c b/src/mesa/drivers/dri/i915/intel_pixel.c
index 83fa086ad29..0ad78353956 100644
--- a/src/mesa/drivers/dri/i915/intel_pixel.c
+++ b/src/mesa/drivers/dri/i915/intel_pixel.c
@@ -25,6 +25,7 @@
  * 
  **************************************************************************/
 
+#include "enums.h"
 #include "swrast/swrast.h"
 
 #include "intel_context.h"
@@ -53,7 +54,7 @@ GLboolean intel_check_blit_fragment_ops( const GLcontext *ctx )
  * RGB565.
  */
 GLboolean intel_check_blit_format( struct intel_region *region,
-				   GLenum type, GLenum format )
+				   GLenum format, GLenum type )
 {
    if (region->cpp == 4 &&
        type == GL_UNSIGNED_INT_8_8_8_8_REV &&        
@@ -67,7 +68,11 @@ GLboolean intel_check_blit_format( struct intel_region *region,
       return GL_TRUE;
    }
    
-   fprintf(stderr, "%s: request doesn't match pixel format\n", __FUNCTION__);
+   fprintf(stderr, "%s: bad format for blit (cpp %d, type %s format %s)\n", 
+	   __FUNCTION__, region->cpp, 
+	   _mesa_lookup_enum_by_nr(type),
+	   _mesa_lookup_enum_by_nr(format));
+
    return GL_FALSE;
 }
 
diff --git a/src/mesa/drivers/dri/i915/intel_pixel.h b/src/mesa/drivers/dri/i915/intel_pixel.h
index 21c1a3ec000..01c0a462427 100644
--- a/src/mesa/drivers/dri/i915/intel_pixel.h
+++ b/src/mesa/drivers/dri/i915/intel_pixel.h
@@ -35,7 +35,7 @@ void intelInitPixelFuncs( struct dd_function_table *functions );
 GLboolean intel_check_blit_fragment_ops( const GLcontext *ctx );
 
 GLboolean intel_check_blit_format( struct intel_region *region,
-				   GLenum type, GLenum format );
+				   GLenum format, GLenum type );
 
 
 GLboolean intel_clip_to_framebuffer( GLcontext *ctx,