diff --git a/src/build.sh b/src/build.sh
index 10a9603f32..5af66ef372 100755
--- a/src/build.sh
+++ b/src/build.sh
@@ -68,4 +68,9 @@ export DEPOT_TOOLS_WIN_TOOLCHAIN=0
 
 ./gn/out/gn gen "$out" --args="$flags $EXTRA_FLAGS" --script-executable=$PYTHON
 
-ninja -C "$out" naive cronet cronet_static
+cronet_targets="cronet cronet_static"
+if echo "$EXTRA_FLAGS" | grep -q "build_static=true"; then
+  cronet_targets=
+fi
+
+ninja -C "$out" naive $cronet_targets