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-rw-r--r--crawl-ref/source/beam.cc2
1 files changed, 1 insertions, 1 deletions
diff --git a/crawl-ref/source/beam.cc b/crawl-ref/source/beam.cc
index dff9480d4a..c3affeb687 100644
--- a/crawl-ref/source/beam.cc
+++ b/crawl-ref/source/beam.cc
@@ -4774,7 +4774,7 @@ void explosion( bolt &beam, bool hole_in_the_middle,
// this is done to model an explosion's behaviour around
// corners where a simple 'line of sight' isn't quite
// enough. This might be slow for really big explosions,
- // as the recursion runs approximately as R^2
+ // as the recursion runs approximately as R^2.
_explosion_map(beam, 0, 0, 0, 0, r);
// Go through affected cells, drawing effect and