Fix format strings in fbench module.

1 files changed, 2 insertions, 1 deletions

diff --git a/fbench/src/fbench/fbench.cpp b/fbench/src/fbench/fbench.cpp
index 36c60e08ef7..205dc867950 100644
--- a/fbench/src/fbench/fbench.cpp
+++ b/fbench/src/fbench/fbench.cpp
@@ -13,6 +13,7 @@
 #include <cstring>
 #include <cmath>
 #include <csignal>
+#include <cinttypes>
 
 namespace {
 
@@ -224,7 +225,7 @@ FBench::PrintSummary()
 
     if (_keepAlive) {
         printf("*** HTTP keep-alive statistics ***\n");
-        printf("connection reuse count -- %zu\n", status._reuseCnt);
+        printf("connection reuse count -- %" PRIu64 "\n", status._reuseCnt);
     }
     printf("***************** Benchmark Summary *****************\n");
     printf("clients:                %8ld\n", _clients.size());