diff --git a/arangod/MMFiles/MMFilesDatafile.cpp b/arangod/MMFiles/MMFilesDatafile.cpp
index f6abcc912d..613e954a9d 100644
--- a/arangod/MMFiles/MMFilesDatafile.cpp
+++ b/arangod/MMFiles/MMFilesDatafile.cpp
@@ -329,7 +329,7 @@ MMFilesDatafile* MMFilesDatafile::create(std::string const& filename, TRI_voc_fi
   // sanity check maximal size
   if (sizeof(MMFilesDatafileHeaderMarker) + sizeof(MMFilesDatafileFooterMarker) >
       maximalSize) {
-    LOG_TOPIC(ERR, arangodb::Logger::FIXME) << "cannot create datafile, maximal size '" << (unsigned int)maximalSize << "' is too small";
+    LOG_TOPIC(ERR, arangodb::Logger::FIXME) << "cannot create datafile, maximal size '" << maximalSize << "' is too small";
     TRI_set_errno(TRI_ERROR_ARANGO_MAXIMAL_SIZE_TOO_SMALL);
 
     return nullptr;
diff --git a/arangod/MMFiles/MMFilesLogfileManager.cpp b/arangod/MMFiles/MMFilesLogfileManager.cpp
index f371f87c92..cd004df79f 100644
--- a/arangod/MMFiles/MMFilesLogfileManager.cpp
+++ b/arangod/MMFiles/MMFilesLogfileManager.cpp
@@ -1288,7 +1288,7 @@ int MMFilesLogfileManager::getWriteableLogfile(uint32_t size,
           // found a logfile, update the status variable and return the logfile
 
           {
-            // LOG_TOPIC(TRACE, arangodb::Logger::FIXME) << "setting lastOpenedId " << // logfile->id();
+            // LOG_TOPIC(TRACE, arangodb::Logger::FIXME) << "setting lastOpenedId " << logfile->id();
             MUTEX_LOCKER(mutexLocker, _idLock);
             _lastOpenedId = logfile->id();
           }
@@ -1485,8 +1485,7 @@ void MMFilesLogfileManager::setCollectionDone(MMFilesWalLogfile* logfile) {
   TRI_ASSERT(logfile != nullptr);
   MMFilesWalLogfile::IdType id = logfile->id();
 
-  // LOG_TOPIC(ERR, arangodb::Logger::FIXME) << "setCollectionDone setting lastCollectedId to " << (unsigned
-  // long long) id;
+  // LOG_TOPIC(ERR, arangodb::Logger::FIXME) << "setCollectionDone setting lastCollectedId to " << id
   {
     WRITE_LOCKER(writeLocker, _logfilesLock);
     logfile->setStatus(MMFilesWalLogfile::StatusType::COLLECTED);
diff --git a/lib/Random/RandomGenerator.cpp b/lib/Random/RandomGenerator.cpp
index 9897057b4e..0525d2460b 100644
--- a/lib/Random/RandomGenerator.cpp
+++ b/lib/Random/RandomGenerator.cpp
@@ -316,7 +316,7 @@ class RandomDeviceCombined : public RandomDevice {
 
       rseed = buffer[0];
 
-      LOG_TOPIC(TRACE, arangodb::Logger::FIXME) << "using seed " << (long unsigned int)rseed;
+      LOG_TOPIC(TRACE, arangodb::Logger::FIXME) << "using seed " << rseed;
     }
 
     if (0 < n) {