diff --git a/src/slack-model.jl b/src/slack-model.jl
index 285dab5..8032c99 100644
--- a/src/slack-model.jl
+++ b/src/slack-model.jl
@@ -133,7 +133,11 @@ function slack_meta(meta::AbstractNLPModelMeta{T, S}; name = meta.name * "-slack
   x0[(meta.nvar + 1):end] .= zero(T)
 
   if (length(x0) != length(lvar)) && any((meta.lcon .== -Inf) .& (meta.ucon .== Inf))
-    throw(error("NLPModels with constraints of the form -∞ ≤ cᵢ(x) ≤ ∞ are not supported by slack models."))
+    throw(
+      error(
+        "NLPModels with constraints of the form -∞ ≤ cᵢ(x) ≤ ∞ are not supported by slack models.",
+      ),
+    )
   end
 
   return NLPModelMeta{T, S}(