diff --git a/zcutil/build.sh b/zcutil/build.sh
index cead633da..6f79157f7 100755
--- a/zcutil/build.sh
+++ b/zcutil/build.sh
@@ -35,5 +35,5 @@ PREFIX="$(pwd)/depends/x86_64-unknown-linux-gnu/"
 
 make "$@" -C ./depends/ V=1 NO_QT=1
 ./autogen.sh
-./configure --prefix="${PREFIX}" --with-gui=no --enable-hardening "$LCOV_ARG" CXXFLAGS='-Wno-deprecated-declarations -Wno-placement-new -Wno-terminate -Werror -Og -g'
+./configure --prefix="${PREFIX}" --with-gui=no --enable-hardening "$LCOV_ARG" CXXFLAGS='-Wno-deprecated-declarations -Wno-placement-new -Wno-terminate -Werror -O1 -g'
 make "$@" V=1