diff --git a/kokoro/linux-clang-cmake/build-docker.sh b/kokoro/linux-clang-cmake/build-docker.sh
index c5fdcd23..6b1d3e1a 100755
--- a/kokoro/linux-clang-cmake/build-docker.sh
+++ b/kokoro/linux-clang-cmake/build-docker.sh
@@ -46,5 +46,5 @@ using ninja-1.10.0
 echo "Building..."
 mkdir /build && cd /build
 
-cmake "$ROOT_DIR" -GNinja -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX="$(pwd)/install" -DBUILD_SHARED_LIBS=$BUILD_SHARED_LIBS
+cmake "$ROOT_DIR" -GNinja -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX="$(pwd)/install" -DBUILD_SHARED_LIBS=$BUILD_SHARED_LIBS -DENABLE_OPT=0
 ninja install
diff --git a/kokoro/linux-gcc-cmake/build-docker.sh b/kokoro/linux-gcc-cmake/build-docker.sh
index 0edc05e2..558695c8 100755
--- a/kokoro/linux-gcc-cmake/build-docker.sh
+++ b/kokoro/linux-gcc-cmake/build-docker.sh
@@ -46,5 +46,5 @@ using ninja-1.10.0
 echo "Building..."
 mkdir /build && cd /build
 
-cmake "$ROOT_DIR" -GNinja -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX="$(pwd)/install" -DBUILD_SHARED_LIBS=$BUILD_SHARED_LIBS
+cmake "$ROOT_DIR" -GNinja -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX="$(pwd)/install" -DBUILD_SHARED_LIBS=$BUILD_SHARED_LIBS -DENABLE_OPT=0
 ninja install