diff --git a/algo/detectors/trd2d/ReadoutConfig.h b/algo/detectors/trd2d/ReadoutConfig.h
index d6e473dd86f38da46a9e461cb409ccb3cf4143a0..473a662f94105f5f24be5a90dd376fdcbad7e3ef 100644
--- a/algo/detectors/trd2d/ReadoutConfig.h
+++ b/algo/detectors/trd2d/ReadoutConfig.h
@@ -162,7 +162,7 @@ namespace cbm::algo::trd2d
     };
     struct ChanDescriptor {
       bool maskFlag;    /// HW mask flag for channel
-      uint8_t tOffset;  /// time [clk] correction
+      int8_t tOffset;   /// time [clk] correction
       float baseline;   /// Baseline correction for channel
       float gainfee;    /// ASIC gain deviation for channel
       ChanNoise noise;  /// noise descriptor [ChanNoise]
diff --git a/algo/detectors/trd2d/UnpackMS.h b/algo/detectors/trd2d/UnpackMS.h
index c75452a6a4a1baa4e070f050080d150c67b77e7d..7989bdd1771d8619005dec551517ae402be40ab9 100644
--- a/algo/detectors/trd2d/UnpackMS.h
+++ b/algo/detectors/trd2d/UnpackMS.h
@@ -119,7 +119,7 @@ namespace cbm::algo::trd2d
   struct UnpackChannelPar {
     int32_t fPadAddress;      ///< Pad address for channel
     bool fMask;               ///< Flag for channel masking
-    uint8_t fDaqOffset    = 0;  ///< Time calibration parameter
+    int8_t fDaqOffset     = 0;  ///< Time calibration parameter
     uint16_t fSignalThres = 0;  ///< Signal threshold to remove ringing channels
   };
 
@@ -151,7 +151,7 @@ namespace cbm::algo::trd2d
    **/
   struct CalibChannelPar {
     bool fMask            = false;  ///< Flag for channel masking
-    uint8_t fDaqOffset    = 0;      ///< Time calibration parameter
+    int8_t fDaqOffset     = 0;      ///< Time calibration parameter
     float fBaseline       = 0.;     ///< baseline correction
     float fGainFee        = -1.;    ///< gain correction wrt to reference
     NoiseChannelPar noise = {};     ///< noise channel parametrisation