diff --git a/openair1/PHY/defs_gNB.h b/openair1/PHY/defs_gNB.h
index 20413098bddcdd2f3d177095b857450455e12527..d5de27aaeee3e7a6615ca8f27ec402074a526642 100644
--- a/openair1/PHY/defs_gNB.h
+++ b/openair1/PHY/defs_gNB.h
@@ -349,7 +349,7 @@ typedef struct {
   /// measured RX noise power
   int ulsch_noise_power[8];
   /// total noise over antennas
-  int ulsch_noise_power_tot;
+  uint32_t ulsch_noise_power_tot;
   /// \brief llr values.
   /// - first index: ? [0..1179743] (hard coded)
   int16_t *llr;