diff --git a/Project.toml b/Project.toml
index 865849f0..975ef333 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,7 +1,7 @@
 name = "COBREXA"
 uuid = "babc4406-5200-4a30-9033-bf5ae714c842"
 authors = ["The developers of COBREXA.jl"]
-version = "2.6.0"
+version = "2.6.1"
 
 [deps]
 AbstractFBCModels = "5a4f3dfa-1789-40f8-8221-69268c29937c"
diff --git a/src/frontend/enzymes.jl b/src/frontend/enzymes.jl
index 1025f13b..e77cefd3 100644
--- a/src/frontend/enzymes.jl
+++ b/src/frontend/enzymes.jl
@@ -101,8 +101,9 @@ $(TYPEDSIGNATURES)
 Internal helper for implementation of [`expand_enzyme_capacity`](@ref) over
 iterable `Dict`-like objects.
 """
-expand_enzyme_capacity_iterable(x) =
-    return [id => (grp, expand_enzyme_capacity_bound(cap)) for (id, (grp, cap)) in x]
+expand_enzyme_capacity_iterable(x) = return [
+    Symbol(id) => (grp, expand_enzyme_capacity_bound(cap)) for (id, (grp, cap)) in x
+]
 
 """
 $(TYPEDSIGNATURES)
diff --git a/test/misc.jl b/test/misc.jl
index 62217c4f..eda0ecd2 100644
--- a/test/misc.jl
+++ b/test/misc.jl
@@ -143,4 +143,7 @@ end
     @test i == :test
     @test ks == [:ident]
     @test v == (0, 123)
+
+    x = expand_enzyme_capacity([("test", [], 0)], [])
+    @test first(x[1]) == :test
 end