diff --git a/src/Counters.cpp b/src/Counters.cpp
index 917044a252..5a6b922e5e 100644
--- a/src/Counters.cpp
+++ b/src/Counters.cpp
@@ -33,6 +33,7 @@ namespace lyx {
 
 
 Counter::Counter()
+	: initial_value_(0)
 {
 	reset();
 }