diff --git a/qpid-proton.spec b/qpid-proton.spec
index 05c4c5f..37f8f34 100644
--- a/qpid-proton.spec
+++ b/qpid-proton.spec
@@ -229,8 +229,8 @@ python_includes=$(ls -d /usr/include/python3*)
     -DSYSINSTALL_BINDINGS=ON \
     -DCMAKE_SKIP_RPATH:BOOL=OFF \
     -DENABLE_FUZZ_TESTING=NO \
-    "-DCMAKE_C_FLAGS=$CMAKE_C_FLAGS $CFLAGS $ADDCFLAGS" \
-    "-DCMAKE_CXX_FLAGS=$CMAKE_CXX_FLAGS $CXXFLAGS $ADDCXXFLAGS" \
+    "-DCMAKE_C_FLAGS=$CMAKE_C_FLAGS $CFLAGS -Wno-error=format-security" \
+    "-DCMAKE_CXX_FLAGS=$CMAKE_CXX_FLAGS $CXXFLAGS -Wno-error=format-security" \
     ..
 #make all docs %{?_smp_mflags}
 make all docs -j1