diff --git a/libs/backends/MSVCbackends/portaudio_audiobackend.vcproj b/libs/backends/MSVCbackends/portaudio_audiobackend.vcproj
index 2120a32546..79a0b91462 100644
--- a/libs/backends/MSVCbackends/portaudio_audiobackend.vcproj
+++ b/libs/backends/MSVCbackends/portaudio_audiobackend.vcproj
@@ -306,6 +306,10 @@
 			Filter="h;hpp;hxx;hm;inl;inc;xsd"
 			UniqueIdentifier="{93995380-89BD-4b04-88EB-625FBE52EBFB}"
 			>
+			<File
+				RelativePath="..\portaudio\audio_utils.h"
+				>
+			</File>
 			<File
 				RelativePath="..\portaudio\cycle_timer.h"
 				>
@@ -314,6 +318,10 @@
 				RelativePath="..\portaudio\debug.h"
 				>
 			</File>
+			<File
+				RelativePath="..\portaudio\dsp_load_calculator.h"
+				>
+			</File>
 			<File
 				RelativePath="..\portaudio\midi_util.h"
 				>