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-rw-r--r--gtk/src/preview.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/gtk/src/preview.h b/gtk/src/preview.h
index a650a245c..b30d1a909 100644
--- a/gtk/src/preview.h
+++ b/gtk/src/preview.h
@@ -16,7 +16,7 @@
#if !defined(_GHB_PREVIEW_H_)
#define _GHB_PREVIEW_H_
-#define MOD_ROUND(v,m) (m * ((v + (m>>1) - 1) / m))
+#define MOD_ROUND(v,m) ((m==1)?v:(m * ((v + (m>>1) - 1) / m)))
#define MOD_DOWN(v,m) (m * (v / m))
#define MOD_UP(v,m) (m * ((v + m - 1) / m))