diff --git a/src/textfile/collector.go b/src/textfile/collector.go
index 178d828..863225b 100644
--- a/src/textfile/collector.go
+++ b/src/textfile/collector.go
@@ -37,3 +37,7 @@ func (c *Collector) Collect(ch chan<- prometheus.Metric) {
 		c.collectFileErrors(ch)
 	}
 }
+
+func (c *Collector) appendErrorForPath(path string) {
+	c.fileMap[path].readErrors++
+}
diff --git a/src/textfile/writer.go b/src/textfile/writer.go
index 9c6b13f..8b76b84 100644
--- a/src/textfile/writer.go
+++ b/src/textfile/writer.go
@@ -19,6 +19,3 @@ func (c *Collector) WriteTextFileMetrics(w http.ResponseWriter, r *http.Request)
 	}
 }
 
-func (c *Collector) appendErrorForPath(path string) {
-	c.fileMap[path].readErrors++
-}