compat/timer: fix logic error on Linux

1 files changed, 1 insertions, 1 deletions

diff --git a/compat/timer.cpp b/compat/timer.cpp
index d8ea242d..84ea44e6 100644
--- a/compat/timer.cpp
+++ b/compat/timer.cpp
@@ -28,7 +28,7 @@ struct timespec Timer::gettime_() const
     struct timespec ts; // NOLINT
     gettime(&ts);
     unsigned long long a = ts.tv_sec, b = state.tv_sec;
-    unsigned c = ts.tv_nsec, d = state.tv_nsec;
+    int c = ts.tv_nsec, d = state.tv_nsec;
     return { (time_t)(a - b), (long)(c - d) };
 }