diff --git a/src/THcTrigDet.h b/src/THcTrigDet.h
index e05b6e52a5ffdb9a29f05b5a9695077eb5a52e10..8ecb233c84f65435395303f1c6018e576e1064a9 100644
--- a/src/THcTrigDet.h
+++ b/src/THcTrigDet.h
@@ -49,8 +49,8 @@ class THcTrigDet : public THaDetector, public THcHitList {
     std::vector<std::string> fAdcNames;
     std::vector<std::string> fTdcNames;
 
-    static const int fMaxAdcChannels = 100;
-    static const int fMaxTdcChannels = 100;
+    static const int fMaxAdcChannels = 200;
+    static const int fMaxTdcChannels = 200;
 
     Int_t fTdcTimeRaw[fMaxTdcChannels];
     Double_t fTdcTime[fMaxTdcChannels];