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-rw-r--r--gr-blocks/lib/probe_rate_impl.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/gr-blocks/lib/probe_rate_impl.h b/gr-blocks/lib/probe_rate_impl.h
index fdec6fa50c..5ebb580ab9 100644
--- a/gr-blocks/lib/probe_rate_impl.h
+++ b/gr-blocks/lib/probe_rate_impl.h
@@ -20,7 +20,7 @@ class probe_rate_impl : public probe_rate
{
private:
double d_alpha, d_beta, d_avg;
- double d_min_update_time;
+ const double d_min_update_time;
boost::posix_time::ptime d_last_update;
uint64_t d_lastthru;
void setup_rpc();