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-rw-r--r--lib/pure/mersenne.nim2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/pure/mersenne.nim b/lib/pure/mersenne.nim
index f18cf5b90..6ac0c4e56 100644
--- a/lib/pure/mersenne.nim
+++ b/lib/pure/mersenne.nim
@@ -17,7 +17,7 @@ type
 proc newMersenneTwister*(seed: uint32): MersenneTwister =
   result.index = 0
   result.mt[0] = seed
-  for i in 1..623'u32:
+  for i in 1'u32 .. 623'u32:
     result.mt[i] = (0x6c078965'u32 * (result.mt[i-1] xor (result.mt[i-1] shr 30'u32)) + i)
 
 proc generateNumbers(m: var MersenneTwister) =