diff --git a/src/demo.c b/src/demo.c
index 9e18fd00..0dce1443 100644
--- a/src/demo.c
+++ b/src/demo.c
@@ -293,7 +293,7 @@ void demo(char *cfgfile, char *weightfile, float thresh, int cam_index, const ch
 	}
 }
 #else
-void demo(char *cfgfile, char *weightfile, float thresh, int cam_index, const char *filename, char **names, int classes, int frame_skip, char *prefix, char *out_filename, int http_stream_port)
+void demo(char *cfgfile, char *weightfile, float thresh, int cam_index, const char *filename, char **names, int classes, int frame_skip, char *prefix, char *out_filename, int http_stream_port, int dont_show)
 {
     fprintf(stderr, "Demo needs OpenCV for webcam images.\n");
 }