diff --git a/command-line.c b/command-line.c
index 3953fa7..8bfc8e2 100644
--- a/command-line.c
+++ b/command-line.c
@@ -104,7 +104,9 @@ static int create_renderers(char **renderers,
 				fprintf(stderr, _("Please specify shared object for external renderer. Will ignore this renderer.\n"));
 				continue;
 			}
-			output_renderer = GDS_RENDER_OUTPUT_RENDERER(external_renderer_new_with_so(ext_params->so_path));
+			output_renderer = GDS_RENDER_OUTPUT_RENDERER(
+						external_renderer_new_with_so_and_param(ext_params->so_path,
+											ext_params->cli_params));
 		} else {
 			continue;
 		}
diff --git a/include/gds-render/output-renderers/external-renderer.h b/include/gds-render/output-renderers/external-renderer.h
index 70877e7..271752b 100644
--- a/include/gds-render/output-renderers/external-renderer.h
+++ b/include/gds-render/output-renderers/external-renderer.h
@@ -50,9 +50,10 @@ ExternalRenderer *external_renderer_new();
 /**
  * @brief Create new ExternalRenderer object with specified shared object path
  * @param so_path Path to shared object, the rendering function is searched in
+ * @param param_string Command line parameter string passed to external renderer
  * @return New object.
  */
-ExternalRenderer *external_renderer_new_with_so(const char *so_path);
+ExternalRenderer *external_renderer_new_with_so_and_param(const char *so_path, const char *param_string);
 
 G_END_DECLS
 
diff --git a/output-renderers/external-renderer.c b/output-renderers/external-renderer.c
index 6ec1071..f79edb8 100644
--- a/output-renderers/external-renderer.c
+++ b/output-renderers/external-renderer.c
@@ -271,9 +271,10 @@ ExternalRenderer *external_renderer_new()
 	return g_object_new(GDS_RENDER_TYPE_EXTERNAL_RENDERER, NULL);
 }
 
-ExternalRenderer *external_renderer_new_with_so(const char *so_path)
+ExternalRenderer *external_renderer_new_with_so_and_param(const char *so_path, const char *param_string)
 {
-	return g_object_new(GDS_RENDER_TYPE_EXTERNAL_RENDERER, "shared-object-path", so_path, NULL);
+	return g_object_new(GDS_RENDER_TYPE_EXTERNAL_RENDERER, "shared-object-path", so_path,
+				"param-string", param_string,NULL);
 }
 
 /** @} */