diff --git a/mesonbuild/backend/ninjabackend.py b/mesonbuild/backend/ninjabackend.py
index c5c208661..0e5697740 100644
--- a/mesonbuild/backend/ninjabackend.py
+++ b/mesonbuild/backend/ninjabackend.py
@@ -993,13 +993,15 @@ class NinjaBackend(backends.Backend):
             fortran_inc_args = mesonlib.listify([target.compilers['fortran'].get_include_args(
                 self.get_target_private_dir(t), is_system=False) for t in obj_targets])
 
-        # Generate compilation targets for C sources generated from Vala
-        # sources. This can be extended to other $LANG->C compilers later if
-        # necessary. This needs to be separate for at least Vala
+        # Generate compilation targets for sources generated by transpilers.
         #
-        # Do not try to unity-build the generated c files from vala, as these
-        # often contain duplicate symbols and will fail to compile properly
-        vala_generated_source_files = []
+        # Do not try to unity-build the generated source files, as these
+        # often contain duplicate symbols and will fail to compile properly.
+        #
+        # Gather all generated source files and header before generating the
+        # compilation rules, to be able to add correct dependencies on the
+        # generated headers.
+        transpiled_source_files = []
         for src in transpiled_sources:
             raw_src = File.from_built_relative(src)
             # Generated targets are ordered deps because the must exist
@@ -1010,13 +1012,8 @@ class NinjaBackend(backends.Backend):
             if self.environment.is_header(src):
                 header_deps.append(raw_src)
             else:
-                # We gather all these and generate compile rules below
-                # after `header_deps` (above) is fully generated
-                vala_generated_source_files.append(raw_src)
-        for src in vala_generated_source_files:
-            # Passing 'vala' here signifies that we want the compile
-            # arguments to be specialized for C code generated by
-            # valac. For instance, no warnings should be emitted.
+                transpiled_source_files.append(raw_src)
+        for src in transpiled_source_files:
             o, s = self.generate_single_compile(target, src, True, [], header_deps)
             obj_list.append(o)