diff --git a/gtk4.changes b/gtk4.changes
index 59a8fba..96e077d 100644
--- a/gtk4.changes
+++ b/gtk4.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Thu Aug  1 04:33:31 UTC 2024 - Dominique Leuenberger <dimstar@opensuse.org>
+
+- Add missed optflags to CFLAGS.
+
 -------------------------------------------------------------------
 Wed Jul 31 13:29:25 UTC 2024 - Filip Kastl <filip.kastl@suse.com>
 
diff --git a/gtk4.spec b/gtk4.spec
index 224868e..40234e4 100644
--- a/gtk4.spec
+++ b/gtk4.spec
@@ -257,7 +257,7 @@ This package enhances gettext with an International Tag Set for GTK+ 4
 %autosetup -p1 -n %{_name}-%{version}
 
 %build
-export CFLAGS=-Wno-int-conversion
+export CFLAGS="%{optflags} -Wno-int-conversion"
 %meson \
 	-Ddocumentation=true \
 	-Dbroadway-backend=true \