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-rw-r--r--source/BlockID.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/source/BlockID.cpp b/source/BlockID.cpp
index b1d00d391..81be6df96 100644
--- a/source/BlockID.cpp
+++ b/source/BlockID.cpp
@@ -29,7 +29,7 @@ class cBlockIDMap
// Making the map case-insensitive:
struct Comparator
{
- bool operator()(const AString & a_Item1, const AString & a_Item2)
+ bool operator()(const AString & a_Item1, const AString & a_Item2) const
{
return (NoCaseCompare(a_Item1, a_Item2) > 0);
}