diff --git a/kf5-kcalendarcore.spec b/kf5-kcalendarcore.spec
index e460174..3d2c938 100644
--- a/kf5-kcalendarcore.spec
+++ b/kf5-kcalendarcore.spec
@@ -25,6 +25,7 @@ URL:     https://cgit.kde.org/%{framework}.git
 %endif
 Source0: http://download.kde.org/%{stable}/frameworks/%{majmin}/%{framework}-%{version}.tar.xz
 
+# libical (and thus kcalendarcore) not on all arches for RHEL8.
 %if 0%{?rhel} == 8
 ExclusiveArch: x86_64 ppc64le %{arm}
 %endif