diff --git a/include/acpi/processor.h b/include/acpi/processor.h
index 1172c27..7bb0b8b 100644
--- a/include/acpi/processor.h
+++ b/include/acpi/processor.h
@@ -320,7 +320,7 @@
 
 #endif				/* CONFIG_CPU_FREQ */
 
-/* in processor_pdc.c */
+/* in processor_core.c */
 void acpi_processor_set_pdc(acpi_handle handle);
 
 /* in processor_throttling.c */