diff --git a/common.c b/common.c
index a21dc9c4..f8b7ae1a 100644
--- a/common.c
+++ b/common.c
@@ -1657,6 +1657,9 @@ char *get_version_string() {
 #ifdef CONFIG_PA
     strcat(version_string, "-pa");
 #endif
+#ifdef CONFIG_PW
+    strcat(version_string, "-pw");
+#endif
 #ifdef CONFIG_SOUNDIO
     strcat(version_string, "-soundio");
 #endif