diff --git a/src/Cru/CruBar.cxx b/src/Cru/CruBar.cxx
index 50b10de3..1f55fd4a 100644
--- a/src/Cru/CruBar.cxx
+++ b/src/Cru/CruBar.cxx
@@ -168,6 +168,18 @@ uint32_t CruBar::getSuperpageSize(uint32_t link)
     superpageSizeIndex = Utilities::getBits(superpageSizeFifo, 24, 31);
   }
 
+  uint32_t superpageSizeFifoCopy = readRegister(Cru::Registers::LINK_SUPERPAGE_SIZE.get(link).index);
+  uint32_t superpageSizeCopy = Utilities::getBits(superpageSizeFifoCopy, 0, 23);
+  if (superpageSizeCopy != superpageSize) {
+   log("superpageSize inconsistent: 1st read = " + std::to_string(superpageSize) + " != " + std::to_string(superpageSizeCopy) + "2nd read", LogWarningDevel_(4600));
+   log("superpageSizeIndex = " + std::to_string(superpageSizeIndex) + ", mSuperpageSizeIndexCounter[ " + std::to_string(link) + "] = " + std::to_string(mSuperpageSizeIndexCounter[link]), LogWarningDevel_(4600));
+  }
+  uint32_t superpageSizeFifoCopy2 = readRegister(Cru::Registers::LINK_SUPERPAGE_SIZE.get(link).index);
+  uint32_t superpageSizeCopy2 = Utilities::getBits(superpageSizeFifoCopy2, 0, 23);
+  if (superpageSizeCopy2 != superpageSizeCopy) {
+   log("superpageSize inconsistent: 2nd read = " + std::to_string(superpageSizeCopy) + " != " + std::to_string(superpageSizeCopy2) + "3rd read", LogWarningDevel_(4600));
+  }
+
   mSuperpageSizeIndexCounter[link] = (superpageSizeIndex + 1) % 256;
 
   return superpageSize;