diff --git a/rabin/global/index.c b/rabin/global/index.c
index 6514e8d..684bb60 100644
--- a/rabin/global/index.c
+++ b/rabin/global/index.c
@@ -190,10 +190,10 @@ set_cfg:
 	*memreqd = MEM_REQD(*hash_slots, *hash_entry_size);
 
 	/*
-	 * If memory required is more than thrice the indicated memory limit then
+	 * If memory required is more than twice the indicated memory limit then
 	 * we switch to Segmented Similarity based dedupe.
 	 */
-	if (*memreqd > (memlimit * 3) && cfg->dedupe_mode == MODE_SIMPLE &&
+	if (*memreqd > (memlimit * 2) && cfg->dedupe_mode == MODE_SIMPLE &&
 	    *pct_interval == 0 && tmppath != NULL) {
 		*pct_interval = DEFAULT_PCT_INTERVAL;
 		set_user = 1;