diff --git a/src/pulsecore/sink-input.c b/src/pulsecore/sink-input.c
index 4cd51d72c..7aee54663 100644
--- a/src/pulsecore/sink-input.c
+++ b/src/pulsecore/sink-input.c
@@ -321,7 +321,7 @@ int pa_sink_input_new(
     pa_return_val_if_fail(pa_channel_map_compatible(&data->channel_map, &data->sample_spec), -PA_ERR_INVALID);
 
     /* Don't restore (or save) stream volume for passthrough streams */
-    if (!pa_sink_input_new_data_is_passthrough(data)) {
+    if (pa_sink_input_new_data_is_passthrough(data)) {
         data->volume_is_set = FALSE;
         data->volume_factor_is_set = FALSE;
     }
diff --git a/src/pulsecore/source-output.c b/src/pulsecore/source-output.c
index d99bafed3..ce9409500 100644
--- a/src/pulsecore/source-output.c
+++ b/src/pulsecore/source-output.c
@@ -299,7 +299,7 @@ int pa_source_output_new(
     pa_return_val_if_fail(pa_channel_map_compatible(&data->channel_map, &data->sample_spec), -PA_ERR_INVALID);
 
     /* Don't restore (or save) stream volume for passthrough streams */
-    if (!pa_source_output_new_data_is_passthrough(data)) {
+    if (pa_source_output_new_data_is_passthrough(data)) {
         data->volume_is_set = FALSE;
         data->volume_factor_is_set = FALSE;
     }