diff --git a/app/render/backend/audiorenderbackend.cpp b/app/render/backend/audiorenderbackend.cpp
index 06955f286..caa452b71 100644
--- a/app/render/backend/audiorenderbackend.cpp
+++ b/app/render/backend/audiorenderbackend.cpp
@@ -84,9 +84,9 @@ void AudioRenderBackend::ValidateRanges()
     for (int j=0;j<cache_queue_.size();j++) {
       const TimeRange& range2 = cache_queue_.at(j);
 
-      if (RangesOverlap(range1, range2) && i != j) {
+      if (TimeRange::Overlap(range1, range2) && i != j) {
         // Combine with the first range
-        cache_queue_[i] = CombineRange(range1, range2);
+        cache_queue_[i] = TimeRange::Combine(range1, range2);
 
         // Remove the second range
         cache_queue_.removeAt(j);
@@ -103,14 +103,3 @@ QString AudioRenderBackend::CachePathName()
 
   return this_cache_dir.filePath(QStringLiteral("pcm"));
 }
-
-TimeRange AudioRenderBackend::CombineRange(const TimeRange &a, const TimeRange &b)
-{
-  return TimeRange(qMin(a.in(), b.in()),
-                   qMax(a.out(), b.out()));
-}
-
-bool AudioRenderBackend::RangesOverlap(const TimeRange &a, const TimeRange &b)
-{
-  return !(a.out() < b.in() || a.in() > b.out());
-}
diff --git a/app/render/backend/audiorenderbackend.h b/app/render/backend/audiorenderbackend.h
index 982bdbca1..aee5b83b5 100644
--- a/app/render/backend/audiorenderbackend.h
+++ b/app/render/backend/audiorenderbackend.h
@@ -42,10 +42,6 @@ protected:
 private:
   void ValidateRanges();
 
-  TimeRange CombineRange(const TimeRange& a, const TimeRange& b);
-
-  bool RangesOverlap(const TimeRange& a, const TimeRange& b);
-
   AudioRenderingParams params_;
 
 };