diff --git a/lib/libtags/wav.c b/lib/libtags/wav.c
index 69b1946a..21faa46d 100644
--- a/lib/libtags/wav.c
+++ b/lib/libtags/wav.c
@@ -49,6 +49,8 @@ tagwav(Tagctx *ctx)
 			break;
 		sz -= 4+4;
 		csz = leuint(d+4);
+		if(csz % 2 == 1)
+			csz += 1;
 		if(sz < csz)
 			break;
 		sz -= csz;