diff --git a/compiler/src/dmd/dmangle.d b/compiler/src/dmd/dmangle.d
index 25794e2c21d1..47c739a4317e 100644
--- a/compiler/src/dmd/dmangle.d
+++ b/compiler/src/dmd/dmangle.d
@@ -833,6 +833,22 @@ public:
                 printf("  parent = %s %s", s.parent.kind(), s.parent.toChars());
             printf("\n");
         }
+        if (s.parent)
+        {
+            if (auto m = s.parent.isModule())
+            {
+                if (m.filetype == FileType.c)
+                {
+                    /* C types at global level get mangled into the __C global namespace
+                     * to get the same mangling regardless of which module it
+                     * is declared in. This works because types are the same if the mangling
+                     * is the same.
+                     */
+                    mangleIdentifier(Id.ImportC, s);
+                    return;
+                }
+            }
+        }
         mangleParent(s);
         if (s.ident)
             mangleIdentifier(s.ident, s);
diff --git a/compiler/src/dmd/frontend.h b/compiler/src/dmd/frontend.h
index c6a07ea106a2..080b8479d9b5 100644
--- a/compiler/src/dmd/frontend.h
+++ b/compiler/src/dmd/frontend.h
@@ -8522,6 +8522,7 @@ struct Id final
     static Identifier* udaMustUse;
     static Identifier* TRUE;
     static Identifier* FALSE;
+    static Identifier* ImportC;
     static Identifier* dllimport;
     static Identifier* dllexport;
     static Identifier* vector_size;
diff --git a/compiler/src/dmd/id.d b/compiler/src/dmd/id.d
index d603e5aeb76f..48ca7665eaef 100644
--- a/compiler/src/dmd/id.d
+++ b/compiler/src/dmd/id.d
@@ -512,6 +512,7 @@ immutable Msgtable[] msgtable =
     { "wchar_t" },
 
     // for C compiler
+    { "ImportC", "__C" },
     { "__tag" },
     { "dllimport" },
     { "dllexport" },
diff --git a/compiler/test/compilable/imports/cimports2a.i b/compiler/test/compilable/imports/cimports2a.i
index 026e4801e542..c8ff97644c3a 100644
--- a/compiler/test/compilable/imports/cimports2a.i
+++ b/compiler/test/compilable/imports/cimports2a.i
@@ -1 +1,4 @@
 extern int xx;
+
+typedef struct Foo *FooRef;
+FooRef make_foo(void);
diff --git a/compiler/test/compilable/imports/cimports2b.i b/compiler/test/compilable/imports/cimports2b.i
index 026e4801e542..03b22b2a2163 100644
--- a/compiler/test/compilable/imports/cimports2b.i
+++ b/compiler/test/compilable/imports/cimports2b.i
@@ -1 +1,4 @@
 extern int xx;
+
+typedef struct Foo *FooRef;
+void free_foo(FooRef foo);
diff --git a/compiler/test/compilable/test22674.d b/compiler/test/compilable/test22674.d
new file mode 100644
index 000000000000..970b43eef5dd
--- /dev/null
+++ b/compiler/test/compilable/test22674.d
@@ -0,0 +1,9 @@
+// https://issues.dlang.org/show_bug.cgi?id=22674
+
+import imports.cimports2a;
+import imports.cimports2b;
+
+void do_foo(){
+    FooRef f = make_foo(); // use_foo.d(5)
+    free_foo(f);           // use_foo.d(6)
+}