diff --git a/src/scenario/scenario.cpp b/src/scenario/scenario.cpp
index aa12e8fc..2e10063d 100644
--- a/src/scenario/scenario.cpp
+++ b/src/scenario/scenario.cpp
@@ -119,6 +119,7 @@ cScenario::cScenario(const cScenario& other)
 	, intro_strs(other.intro_strs)
 	, journal_strs(other.journal_strs)
 	, spec_strs(other.spec_strs)
+	, sdf_names(other.sdf_names)
 	, snd_names(other.snd_names)
 	, adjust_diff(other.adjust_diff)
 	, is_legacy(other.is_legacy)