diff --git a/qpid-proton.spec b/qpid-proton.spec
index 58740c2..a2b98cf 100644
--- a/qpid-proton.spec
+++ b/qpid-proton.spec
@@ -237,6 +237,7 @@ python_includes=$(ls -d /usr/include/python3*)
     -DSYSINSTALL_BINDINGS=ON \
     -DCMAKE_SKIP_RPATH:BOOL=OFF \
     -DENABLE_FUZZ_TESTING=NO \
+   "-DCMAKE_C_FLAGS=$CFLAGS -Wno-deprecated-declarations" \
     ..
 #make all docs %{?_smp_mflags}
 make all docs -j1