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-rw-r--r--src/libexpr/primops.cc2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/libexpr/primops.cc b/src/libexpr/primops.cc
index 2bc5459d1306..3d8d9b8ad789 100644
--- a/src/libexpr/primops.cc
+++ b/src/libexpr/primops.cc
@@ -631,7 +631,7 @@ static Expr primDependencyClosure(EvalState & state, const ATermVector & args)
 
 static Expr primAbort(EvalState & state, const ATermVector & args)
 {
-    throw Abort(format("evaluation aborted with the following error message: %1%") %
+    throw Abort(format("evaluation aborted with the following error message: `%1%'") %
         evalString(state, args[0]));
 }