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-rw-r--r--compiler/scriptconfig.nim2
1 files changed, 1 insertions, 1 deletions
diff --git a/compiler/scriptconfig.nim b/compiler/scriptconfig.nim
index ae7e030b8..f3d6ccfdd 100644
--- a/compiler/scriptconfig.nim
+++ b/compiler/scriptconfig.nim
@@ -45,7 +45,7 @@ proc setupVM*(module: PSym; cache: IdentCache; scriptName: string;
   template cbos(name, body) {.dirty.} =
     result.registerCallback "stdlib.system." & astToStr(name),
       proc (a: VmArgs) =
-        errorMsg = nil
+        errorMsg = ""
         try:
           body
         except OSError: