diff --git a/qahw/src/qahw.c b/qahw/src/qahw.c
index d03a570..0c00158 100644
--- a/qahw/src/qahw.c
+++ b/qahw/src/qahw.c
@@ -1722,7 +1722,8 @@
     }
 
     /* dlsym qahwi_in_read_v2 if timestamp flag is used */
-    if (!rc && (flags & QAHW_INPUT_FLAG_TIMESTAMP)) {
+    if (!rc && ((flags & QAHW_INPUT_FLAG_TIMESTAMP) ||
+                (flags & QAHW_INPUT_FLAG_PASSTHROUGH))) {
         const char *error;
 
         /* clear any existing errors */