diff --git a/src/validation.cpp b/src/validation.cpp
--- a/src/validation.cpp
+++ b/src/validation.cpp
@@ -1053,14 +1053,14 @@
         m_finalizedBlockIndex = pindexNew->pprev;
     }
 
-    LogPrintf("%s: invalid block=%s  height=%d  log2_work=%.8g  date=%s\n",
+    LogPrintf("%s: invalid block=%s  height=%d  log2_work=%f  date=%s\n",
               __func__, pindexNew->GetBlockHash().ToString(),
               pindexNew->nHeight,
               log(pindexNew->nChainWork.getdouble()) / log(2.0),
               FormatISO8601DateTime(pindexNew->GetBlockTime()));
     CBlockIndex *tip = ::ChainActive().Tip();
     assert(tip);
-    LogPrintf("%s:  current best=%s  height=%d  log2_work=%.8g  date=%s\n",
+    LogPrintf("%s:  current best=%s  height=%d  log2_work=%f  date=%s\n",
               __func__, tip->GetBlockHash().ToString(),
               ::ChainActive().Height(),
               log(tip->nChainWork.getdouble()) / log(2.0),
@@ -2302,7 +2302,7 @@
         g_best_block_cv.notify_all();
     }
 
-    LogPrintf("%s: new best=%s height=%d version=0x%08x log2_work=%.8g tx=%ld "
+    LogPrintf("%s: new best=%s height=%d version=0x%08x log2_work=%f tx=%ld "
               "date='%s' progress=%f cache=%.1fMiB(%utxo)\n",
               __func__, pindexNew->GetBlockHash().ToString(),
               pindexNew->nHeight, pindexNew->nVersion,