diff --git a/tests/stdlib/tstreams.nim b/tests/stdlib/tstreams.nim
index e0310b5f52..c2ceed6244 100644
--- a/tests/stdlib/tstreams.nim
+++ b/tests/stdlib/tstreams.nim
@@ -12,7 +12,6 @@ I
 AM
 GROOT
 '''
-disabled: "windows"
 """
 
 
@@ -64,14 +63,14 @@ echo buffer
 
 block:
   var ss = newStringStream("The quick brown fox jumped over the lazy dog.\nThe lazy dog ran")
-  assert(ss.getPosition == 0)
-  assert(ss.peekStr(5) == "The q")
-  assert(ss.getPosition == 0) # haven't moved
-  assert(ss.readStr(5) == "The q")
-  assert(ss.getPosition == 5) # did move
-  assert(ss.peekLine() == "uick brown fox jumped over the lazy dog.")
-  assert(ss.getPosition == 5) # haven't moved
+  doAssert(ss.getPosition == 0)
+  doAssert(ss.peekStr(5) == "The q")
+  doAssert(ss.getPosition == 0) # haven't moved
+  doAssert(ss.readStr(5) == "The q")
+  doAssert(ss.getPosition == 5) # did move
+  doAssert(ss.peekLine() == "uick brown fox jumped over the lazy dog.")
+  doAssert(ss.getPosition == 5) # haven't moved
   var str = newString(100)
-  assert(ss.peekLine(str))
-  assert(str == "uick brown fox jumped over the lazy dog.")
-  assert(ss.getPosition == 5) # haven't moved
+  doAssert(ss.peekLine(str))
+  doAssert(str == "uick brown fox jumped over the lazy dog.")
+  doAssert(ss.getPosition == 5) # haven't moved