1 files changed, 2 insertions, 1 deletions
diff --git a/src/mesa/swrast/s_span.c b/src/mesa/swrast/s_span.c
index fa63ade89ce..8fbd32276cd 100644
--- a/src/mesa/swrast/s_span.c
+++ b/src/mesa/swrast/s_span.c
@@ -1414,6 +1414,7 @@ _swrast_read_rgba_span( struct gl_context *ctx, struct gl_renderbuffer *rb,
                         GLuint n, GLint x, GLint y,
                         GLvoid *rgba)
 {
+   struct swrast_renderbuffer *srb = swrast_renderbuffer(rb);
    GLenum dstType = GL_FLOAT;
    const GLint bufWidth = (GLint) rb->Width;
    const GLint bufHeight = (GLint) rb->Height;
@@ -1464,7 +1465,7 @@ _swrast_read_rgba_span( struct gl_context *ctx, struct gl_renderbuffer *rb,
 	     rb->_BaseFormat == GL_LUMINANCE_ALPHA ||
 	     rb->_BaseFormat == GL_ALPHA);
 
-      assert(rb->Map);
+      assert(srb->Map);
 
       src = _swrast_pixel_address(rb, x + skip, y);