diff --git a/boinc-client.spec b/boinc-client.spec
index a59a55e..e4612d9 100644
--- a/boinc-client.spec
+++ b/boinc-client.spec
@@ -128,12 +128,11 @@ done
   --disable-fcgi \
   --enable-unicode \
   --with-wx-config=/usr/bin/wx-config-3.0 \
-  --enable-wx-debug=no \
   --with-ssl \
   --with-x \
   STRIP=: \
   DOCBOOK2X_MAN=/usr/bin/db2x_docbook2man \
-  "CXXFLAGS=$(pkg-config gtk+-x11-3.0 --cflags --libs) ${RPM_OPT_FLAGS}"
+  "CXXFLAGS=$(pkg-config gtk+-x11-3.0 --cflags --libs) ${RPM_OPT_FLAGS} -DNDEBUG"
 
 # Disable rpaths
 sed -i 's|^hardcode_libdir_flag_spec=.*|hardcode_libdir_flag_spec=""|g' libtool