diff --git a/compiler/trees.nim b/compiler/trees.nim
index 79a460aa0e..424fba14c7 100644
--- a/compiler/trees.nim
+++ b/compiler/trees.nim
@@ -62,7 +62,7 @@ proc sameTree*(a, b: PNode): bool =
       # don't go nuts here: same symbol as string is enough:
       result = a.sym.name.id == b.sym.name.id
     of nkIdent: result = a.ident.id == b.ident.id
-    of nkCharLit..nkInt64Lit: result = a.intVal == b.intVal
+    of nkCharLit..nkUInt64Lit: result = a.intVal == b.intVal
     of nkFloatLit..nkFloat64Lit: result = a.floatVal == b.floatVal
     of nkStrLit..nkTripleStrLit: result = a.strVal == b.strVal
     of nkEmpty, nkNilLit, nkType: result = true