diff --git a/libs/ardour/ardour/audio_backend.h b/libs/ardour/ardour/audio_backend.h
index da47004663..ba8e244fcd 100644
--- a/libs/ardour/ardour/audio_backend.h
+++ b/libs/ardour/ardour/audio_backend.h
@@ -195,7 +195,7 @@ class LIBARDOUR_API AudioBackend : public PortEngine {
      * implement this function and return an intersection (not union) of available
      * sample rates valid for the given input + output device combination.
      */
-    virtual std::vector<float> available_sample_rates (const std::string& input_device, const std::string& output_device) const {
+    virtual std::vector<float> available_sample_rates2 (const std::string& input_device, const std::string& output_device) const {
 	    std::vector<float> input_sizes  = available_sample_rates (input_device);
 	    std::vector<float> output_sizes = available_sample_rates (output_device);
 	    std::vector<float> rv;
@@ -228,7 +228,7 @@ class LIBARDOUR_API AudioBackend : public PortEngine {
      * implement this function and return an intersection (not union) of available
      * buffer sizes valid for the given input + output device combination.
      */
-    virtual std::vector<uint32_t> available_buffer_sizes (const std::string& input_device, const std::string& output_device) const {
+    virtual std::vector<uint32_t> available_buffer_sizes2 (const std::string& input_device, const std::string& output_device) const {
 	    std::vector<uint32_t> input_rates  = available_buffer_sizes (input_device);
 	    std::vector<uint32_t> output_rates = available_buffer_sizes (output_device);
 	    std::vector<uint32_t> rv;
diff --git a/libs/backends/alsa/alsa_audiobackend.cc b/libs/backends/alsa/alsa_audiobackend.cc
index 1e9ebd7764..9e811700a4 100644
--- a/libs/backends/alsa/alsa_audiobackend.cc
+++ b/libs/backends/alsa/alsa_audiobackend.cc
@@ -216,7 +216,7 @@ AlsaAudioBackend::acquire_device(const char* device_name)
 }
 
 std::vector<float>
-AlsaAudioBackend::available_sample_rates (const std::string& input_device, const std::string& output_device) const
+AlsaAudioBackend::available_sample_rates2 (const std::string& input_device, const std::string& output_device) const
 {
 	std::vector<float> sr;
 	if (input_device == _("None") && output_device == _("None")) {
@@ -262,7 +262,7 @@ AlsaAudioBackend::available_sample_rates (const std::string& device) const
 }
 
 std::vector<uint32_t>
-AlsaAudioBackend::available_buffer_sizes (const std::string& input_device, const std::string& output_device) const
+AlsaAudioBackend::available_buffer_sizes2 (const std::string& input_device, const std::string& output_device) const
 {
 	std::vector<uint32_t> bs;
 	if (input_device == _("None") && output_device == _("None")) {
diff --git a/libs/backends/alsa/alsa_audiobackend.h b/libs/backends/alsa/alsa_audiobackend.h
index 73eddaaf4e..e604fe0cc9 100644
--- a/libs/backends/alsa/alsa_audiobackend.h
+++ b/libs/backends/alsa/alsa_audiobackend.h
@@ -171,9 +171,9 @@ class AlsaAudioBackend : public AudioBackend {
 		std::vector<DeviceStatus> enumerate_input_devices () const;
 		std::vector<DeviceStatus> enumerate_output_devices () const;
 		std::vector<float> available_sample_rates (const std::string& device) const;
-		std::vector<float> available_sample_rates (const std::string&, const std::string&) const;
+		std::vector<float> available_sample_rates2 (const std::string&, const std::string&) const;
 		std::vector<uint32_t> available_buffer_sizes (const std::string& device) const;
-		std::vector<uint32_t> available_buffer_sizes (const std::string&, const std::string&) const;
+		std::vector<uint32_t> available_buffer_sizes2 (const std::string&, const std::string&) const;
 		uint32_t available_input_channel_count (const std::string& device) const;
 		uint32_t available_output_channel_count (const std::string& device) const;
 
diff --git a/libs/backends/coreaudio/coreaudio_backend.cc b/libs/backends/coreaudio/coreaudio_backend.cc
index 732c83c41a..4e01a2625e 100644
--- a/libs/backends/coreaudio/coreaudio_backend.cc
+++ b/libs/backends/coreaudio/coreaudio_backend.cc
@@ -219,7 +219,7 @@ CoreAudioBackend::available_sample_rates (const std::string& device) const
 }
 
 std::vector<float>
-CoreAudioBackend::available_sample_rates (const std::string& input_device, const std::string& output_device) const
+CoreAudioBackend::available_sample_rates2 (const std::string& input_device, const std::string& output_device) const
 {
 	std::vector<float> sr;
 	std::vector<float> sr_in;
@@ -254,7 +254,7 @@ CoreAudioBackend::available_buffer_sizes (const std::string& device) const
 }
 
 std::vector<uint32_t>
-CoreAudioBackend::available_buffer_sizes (const std::string& input_device, const std::string& output_device) const
+CoreAudioBackend::available_buffer_sizes2 (const std::string& input_device, const std::string& output_device) const
 {
 	std::vector<uint32_t> bs;
 	std::vector<uint32_t> bs_in;
@@ -332,7 +332,7 @@ CoreAudioBackend::set_output_device_name (const std::string& d)
 int
 CoreAudioBackend::set_sample_rate (float sr)
 {
-	std::vector<float> srs = available_sample_rates (_input_audio_device, _output_audio_device);
+	std::vector<float> srs = available_sample_rates2 (_input_audio_device, _output_audio_device);
 	if (std::find(srs.begin(), srs.end(), sr) == srs.end()) {
 		return -1;
 	}
diff --git a/libs/backends/coreaudio/coreaudio_backend.h b/libs/backends/coreaudio/coreaudio_backend.h
index 82c451af9e..55aaf47389 100644
--- a/libs/backends/coreaudio/coreaudio_backend.h
+++ b/libs/backends/coreaudio/coreaudio_backend.h
@@ -171,9 +171,9 @@ class CoreAudioBackend : public AudioBackend {
 		std::vector<DeviceStatus> enumerate_output_devices () const;
 
 		std::vector<float> available_sample_rates (const std::string& device) const;
-		std::vector<float> available_sample_rates (const std::string&, const std::string&) const;
+		std::vector<float> available_sample_rates2 (const std::string&, const std::string&) const;
 		std::vector<uint32_t> available_buffer_sizes (const std::string& device) const;
-		std::vector<uint32_t> available_buffer_sizes (const std::string&, const std::string&) const;
+		std::vector<uint32_t> available_buffer_sizes2 (const std::string&, const std::string&) const;
 		uint32_t available_input_channel_count (const std::string& device) const;
 		uint32_t available_output_channel_count (const std::string& device) const;