diff --git a/changelog/dmd.import-c-i.dd b/changelog/dmd.import-c-i.dd
new file mode 100644
index 0000000000..00a1421a33
--- /dev/null
+++ b/changelog/dmd.import-c-i.dd
@@ -0,0 +1,3 @@
+Using the compiler flag `-i` will now properly pick up C source files
+
+Previously you needed to manually include .c source files, it now works just like with .d files
diff --git a/compiler/src/dmd/compiler.d b/compiler/src/dmd/compiler.d
index d2bedc9959..e01462ba5e 100644
--- a/compiler/src/dmd/compiler.d
+++ b/compiler/src/dmd/compiler.d
@@ -138,7 +138,7 @@ extern (C++) struct Compiler
      */
     extern(C++) static bool onImport(Module m)
     {
-        if (includeImports && m.filetype == FileType.d)
+        if (includeImports && (m.filetype == FileType.d || m.filetype == FileType.c))
         {
             if (includeImportedModuleCheck(ModuleComponentRange(
                 m.md ? m.md.packages : [], m.ident, m.isPackageFile)))
diff --git a/compiler/test/compilable/test16776.d b/compiler/test/compilable/test16776.d
new file mode 100644
index 0000000000..9ebd515d8b
--- /dev/null
+++ b/compiler/test/compilable/test16776.d
@@ -0,0 +1,8 @@
+// ARG_SETS: -i
+// PERMUTE_ARGS:
+// LINK:
+import imports.cstuff3;
+void main()
+{
+    int s = squared(2);
+}