diff --git a/src/spell.cpp b/src/spell.cpp
index 30c9311c..e000949c 100644
--- a/src/spell.cpp
+++ b/src/spell.cpp
@@ -47,6 +47,7 @@ cSpell& cSpell::needsSelect(eSpellSelect sel) {
 	return *this;
 }
 
+// Mark a spell as castable by pacifist PCs
 cSpell& cSpell::asPeaceful() {
 	peaceful = true;
 	return *this;