diff --git a/parasitics/Parasitics.cc b/parasitics/Parasitics.cc
index cd7da4e3..d9a04ffe 100644
--- a/parasitics/Parasitics.cc
+++ b/parasitics/Parasitics.cc
@@ -39,7 +39,8 @@
 namespace sta {
 
 Parasitics::Parasitics(StaState *sta) :
-  StaState(sta)
+  StaState(sta),
+  coupling_cap_factor_(1.0)
 {
 }