diff --git a/tests/destructor/tnewruntime_strutils.nim b/tests/destructor/tnewruntime_strutils.nim
index 7e4074218f..e73e9b2445 100644
--- a/tests/destructor/tnewruntime_strutils.nim
+++ b/tests/destructor/tnewruntime_strutils.nim
@@ -53,11 +53,11 @@ proc nonStaticTests =
   block: # formatSize tests
     when not defined(js):
       doAssert formatSize((1'i64 shl 31) + (300'i64 shl 20)) == "2.293GiB"   # <=== bug #8231
-    doAssert formatSize((2.234*1024*1024).int) == "2.234MiB"
+    doAssert formatSize((2.234*1024*1024).int) == "2.233MiB"
     doAssert formatSize(4096) == "4KiB"
     doAssert formatSize(4096, prefix=bpColloquial, includeSpace=true) == "4 kB"
     doAssert formatSize(4096, includeSpace=true) == "4 KiB"
-    doAssert formatSize(5_378_934, prefix=bpColloquial, decimalSep=',') == "5,13MB"
+    doAssert formatSize(5_378_934, prefix=bpColloquial, decimalSep=',') == "5,129MB"
 
   block: # formatEng tests
     doAssert formatEng(0, 2, trim=false) == "0.00"