diff --git a/search/Crpr.cc b/search/Crpr.cc
index d748c9c5..e19aa6e5 100644
--- a/search/Crpr.cc
+++ b/search/Crpr.cc
@@ -297,7 +297,10 @@ CheckCrpr::findCrpr1(const PathVertex *src_clk_path,
     const EarlyLate *tgt_el = tgt_clk_path->minMax(this);
     Arrival src_arrival = src_clk_path->arrival(this);
     Arrival tgt_arrival = tgt_clk_path->arrival(this);
-    float crpr_mean = abs(delayAsFloat(src_arrival) - delayAsFloat(tgt_arrival));
+    float src_clk_time = src_clk_path->clkEdge(this)->time();
+    float tgt_clk_time = tgt_clk_path->clkEdge(this)->time();
+    float crpr_mean = abs(delayAsFloat(src_arrival) - src_clk_time
+			  - (delayAsFloat(tgt_arrival) - tgt_clk_time));
     float crpr_sigma2 = delaySigma2(src_arrival, src_el)
       + delaySigma2(tgt_arrival, tgt_el);
     return makeDelay2(crpr_mean, -crpr_sigma2, -crpr_sigma2);