diff --git a/src/module.c b/src/module.c
index 4f21408fa7626..ea62a300ce56b 100644
--- a/src/module.c
+++ b/src/module.c
@@ -648,7 +648,7 @@ JL_DLLEXPORT jl_value_t *jl_module_names(jl_module_t *m, int all, int imported)
             int hidden = jl_symbol_name(b->name)[0]=='#';
             if ((b->exportp ||
                  (imported && b->imported) ||
-                 ((b->owner == m) && (all || m == jl_main_module))) &&
+                 (b->owner == m && !b->imported && (all || m == jl_main_module))) &&
                 (all || (!b->deprecated && !hidden))) {
                 jl_array_grow_end(a, 1);
                 //XXX: change to jl_arrayset if array storage allocation for Array{Symbols,1} changes:
diff --git a/src/toplevel.c b/src/toplevel.c
index f718d2df401fd..c3279117dacbe 100644
--- a/src/toplevel.c
+++ b/src/toplevel.c
@@ -516,14 +516,23 @@ static jl_method_instance_t *method_instance_for_thunk(jl_code_info_t *src, jl_m
 static void import_module(jl_module_t *m, jl_module_t *import)
 {
     jl_sym_t *name = import->name;
+    jl_binding_t *b;
     if (jl_binding_resolved_p(m, name)) {
-        jl_binding_t *b = jl_get_binding(m, name);
+        b = jl_get_binding(m, name);
         if (b->owner != m || (b->value && b->value != (jl_value_t*)import)) {
             jl_errorf("importing %s into %s conflicts with an existing identifier",
                       jl_symbol_name(name), jl_symbol_name(m->name));
         }
     }
-    jl_set_const(m, name, (jl_value_t*)import);
+    else {
+        b = jl_get_binding_wr(m, name, 1);
+        b->imported = 1;
+    }
+    if (!b->constp) {
+        b->value = (jl_value_t*)import;
+        b->constp = 1;
+        jl_gc_wb(m, (jl_value_t*)import);
+    }
 }
 
 // replace Base.X with top-level X
diff --git a/test/reflection.jl b/test/reflection.jl
index 38efa48b72f57..dbb544b2e8ac1 100644
--- a/test/reflection.jl
+++ b/test/reflection.jl
@@ -738,3 +738,12 @@ typeparam(::Type{T}, a::AbstractArray{T}) where T = 2
 @test typeparam(Int, rand(Int, 2)) == 2
 
 end
+
+# issue #26267
+module M26267
+import Test
+foo(x) = x
+end
+@test !(:Test in names(M26267, all=true, imported=false))
+@test :Test in names(M26267, all=true, imported=true)
+@test :Test in names(M26267, all=false, imported=true)