diff --git a/python-PyMuPDF.changes b/python-PyMuPDF.changes
index 4a1b4fe..dba295d 100644
--- a/python-PyMuPDF.changes
+++ b/python-PyMuPDF.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Mon Mar 17 09:06:01 UTC 2025 - Andreas Schwab <schwab@suse.de>
+
+- Compile everything with -DNDEBUG to fix reference to undefined symbols
+- Compile mupdf with %optflags
+
 -------------------------------------------------------------------
 Wed Dec 13 14:54:54 UTC 2023 - ecsos <ecsos@opensuse.org>
 
diff --git a/python-PyMuPDF.spec b/python-PyMuPDF.spec
index 76bb7eb..8f30f2b 100644
--- a/python-PyMuPDF.spec
+++ b/python-PyMuPDF.spec
@@ -1,7 +1,7 @@
 #
-# spec file
+# spec file for package python-PyMuPDF
 #
-# Copyright (c) 2023 SUSE LLC
+# Copyright (c) 2025 SUSE LLC
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -60,7 +60,8 @@ book formats. PyMuPDF can also access files with extensions *.pdf,
 %autosetup -p1 -n %{pypi_name}-%{version}
 
 %build
-export CFLAGS="%{optflags} -I/usr/include/freetype2"
+export CFLAGS="%{optflags} -I/usr/include/freetype2 -DNDEBUG"
+export ARCHFLAGS="%{optflags}"
 %pyproject_wheel
 
 %install