diff --git a/libctru/source/services/soc/soc_ioctl.c b/libctru/source/services/soc/soc_ioctl.c
index 6fce0d7..416a443 100644
--- a/libctru/source/services/soc/soc_ioctl.c
+++ b/libctru/source/services/soc/soc_ioctl.c
@@ -33,5 +33,7 @@ int ioctl(int fd, int request, ...)
 		break;
 	}
 
+	va_end(ap);
+
 	return ret;
 }