diff --git a/0001-rpm-Always-set-b_ndebug-to-true.patch b/0001-rpm-Always-set-b_ndebug-to-true.patch
new file mode 100644
index 0000000..89824e2
--- /dev/null
+++ b/0001-rpm-Always-set-b_ndebug-to-true.patch
@@ -0,0 +1,27 @@
+From 1afae5c4e8e5fcb3028bb36cd4e1fa9c41600dd7 Mon Sep 17 00:00:00 2001
+From: Igor Gnatenko <i.gnatenko.brain@gmail.com>
+Date: Mon, 25 Mar 2019 17:00:32 +0100
+Subject: [PATCH] rpm: Always set b_ndebug to true
+
+'if-release' does not catch buildtype=plain, so we need to do this.
+
+Signed-off-by: Igor Gnatenko <i.gnatenko.brain@gmail.com>
+---
+ data/macros.meson | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/data/macros.meson b/data/macros.meson
+index 05d21e58..431a90c3 100644
+--- a/data/macros.meson
++++ b/data/macros.meson
+@@ -21,6 +21,7 @@
+         --sharedstatedir=%{_sharedstatedir} \
+         --wrap-mode=%{__meson_wrap_mode} \
+         --auto-features=%{__meson_auto_features} \
++	-Db_ndebug=true \
+         %{_vpath_srcdir} %{_vpath_builddir} \
+ 	%{nil}}
+ 
+-- 
+2.21.0
+
diff --git a/meson.spec b/meson.spec
index 2613d6a..aaec26d 100644
--- a/meson.spec
+++ b/meson.spec
@@ -4,12 +4,14 @@
 
 Name:           meson
 Version:        0.50.0
-Release:        1%{?dist}
+Release:        2%{?dist}
 Summary:        High productivity build system
 
 License:        ASL 2.0
 URL:            http://mesonbuild.com/
-Source0:        https://github.com/mesonbuild/meson/archive/%{version}/%{name}-%{version}.tar.gz
+Source:         https://github.com/mesonbuild/meson/archive/%{version}/%{name}-%{version}.tar.gz
+# https://github.com/mesonbuild/meson/pull/5142
+Patch0001:      0001-rpm-Always-set-b_ndebug-to-true.patch
 
 BuildArch:      noarch
 Obsoletes:      %{name}-gui < 0.31.0-3
@@ -101,6 +103,9 @@ export MESON_PRINT_TEST_OUTPUT=1
 %{_datadir}/polkit-1/actions/com.mesonbuild.install.policy
 
 %changelog
+* Mon Mar 25 2019 Igor Gnatenko <ignatenkobrain@fedoraproject.org> - 0.50.0-2
+- Set -Db_ndebug=true
+
 * Sun Mar 10 2019 Igor Gnatenko <ignatenkobrain@fedoraproject.org> - 0.50.0-1
 - Update to 0.50.0