diff --git a/libraries/base/diag/diag.peripheral.yaml b/libraries/base/diag/diag.peripheral.yaml
index 231834d3355ba9b3092ce4e4488fd3d80a12ed77..1b69c056afe615b0ffd24150b5ba4d956a0aa0e8 100644
--- a/libraries/base/diag/diag.peripheral.yaml
+++ b/libraries/base/diag/diag.peripheral.yaml
@@ -16,8 +16,8 @@ peripherals:
       - mm_port_name: REG_DIAG_WG
         mm_port_type: REG
         mm_port_description: "Waveform control."
-        number_of_mm_ports: g_nof_streams
         mm_port_span: 16
+        number_of_mm_ports: g_nof_streams
         fields:
           - - field_name: nof_samples
               field_description: "Number of samples in WG period."